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#26 2011-07-27 07:20:18

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

correct!


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#27 2011-07-27 07:20:48

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

so did i do the steps correctly ??


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#28 2011-07-27 07:21:36

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Not yet! You have to eliminate the -4.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#29 2011-07-27 07:22:52

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

you didn't get the actual value of x.


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#30 2011-07-27 07:23:23

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

i got rid of it so i can find what x^2 equals isn't that what am spouse to do


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#31 2011-07-27 07:23:52

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

yes, now solve the x^2


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#32 2011-07-27 07:24:14

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

yes it is.now what is x going to be equal to?


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#33 2011-07-27 07:26:55

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

x^2-4=0

-4+4=0  0+4=4

x^2=4
x=0

3*0(4-4)=0


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#34 2011-07-27 07:27:24

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

x^2=4
x=0

Not correct!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#35 2011-07-27 07:28:13

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

hi zee-f

you didn't solve x^2-4=0.i'm not sure what you wrote there.


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#36 2011-07-27 07:32:13

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

am confused what did i do wrong ?


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#37 2011-07-27 07:32:46

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

x^2 = 4

Can you solve that? Give it a try.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#38 2011-07-27 07:34:08

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

you know i think this would be easier for you if you did it like a difference of squares.


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#39 2011-07-27 07:34:34

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

x*x=4

2*2=4


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#40 2011-07-27 07:36:18

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Okay, you snuck that in! Very good!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#41 2011-07-27 07:37:04

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

x^2 = 4


x^2 = 4


x = {-2, 2}


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#42 2011-07-27 07:38:24

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

this is getting harder then  i thought hmm


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#43 2011-07-27 07:38:35

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Hi;

Please one post at a time. We are getting out of sync.

Are you okay now with it?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#44 2011-07-27 07:39:47

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

am ganna do the whole thing over


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#45 2011-07-27 07:40:59

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Yes, but try to be neat.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#46 2011-07-27 07:44:07

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

i have a question isn't the whole point to get the x to equal zero so when i  did 3x=0

and got x=0 the zero is ganna be multiplied by x^2-4

so it makes it true the first x did equal 0


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#47 2011-07-27 07:44:48

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

One of the roots is 0, yes. Maybe 2.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#48 2011-07-27 07:45:31

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

one answer is 0,but you want to get all the values of x for which the equation is true.


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#49 2011-07-27 07:46:40

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

-4 + x^2 = 0

.

Add '4' to each side of the equation.
-4 + 4 + x^2 = 0 + 4

-4 + 4 = 0
0 + x^2 = 0 + 4
x^2 = 0 + 4

0 + 4 = 4
x^2 = 4

Simplifying
x^2 = 4


x = {-2, 2}


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#50 2011-07-27 07:47:25

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

yep, now please check that those are roots.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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