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#51 2011-07-27 07:49:16

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

Re: Solving Quadratics by Factoring and Graphing

so its ganna be 2^2 that the x^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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#52 2011-07-27 07:50:01

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

Re: Solving Quadratics by Factoring and Graphing

Plug into the original equation to check that it equals zero.


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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#53 2011-07-27 07:53:35

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

Re: Solving Quadratics by Factoring and Graphing

3x^2-12x=0

3*2^2-12*0=0

yup it works


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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#54 2011-07-27 07:54:34

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

Re: Solving Quadratics by Factoring and Graphing

Nope!

3 (2^2) = 12

- 12* 2 = - 24

12 - 24  does not equal 0


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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#55 2011-07-27 07:54:40

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

Re: Solving Quadratics by Factoring and Graphing

so is what i did correct now in the steps


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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#56 2011-07-27 07:56:05

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

Re: Solving Quadratics by Factoring and Graphing

Please bring down the original problem because along the way you have done something kooky.


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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#57 2011-07-27 07:56:24

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

Re: Solving Quadratics by Factoring and Graphing

no the x^2 =2 but x=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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#58 2011-07-27 07:58:24

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

Re: Solving Quadratics by Factoring and Graphing

3x^3 – 12x = 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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#59 2011-07-27 07:58:39

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

Re: Solving Quadratics by Factoring and Graphing

it should be 3x^3-12x=0 instead of 3x^2-12x=0


“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
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#60 2011-07-27 07:58:50

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

Re: Solving Quadratics by Factoring and Graphing

Start from there:


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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#61 2011-07-27 08:01:08

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

Re: Solving Quadratics by Factoring and Graphing

3x^3 – 12x = 0   why should it be that am not the one who did the question lol my teacher did


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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#62 2011-07-27 08:01:48

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

Re: Solving Quadratics by Factoring and Graphing

Factor please!


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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#63 2011-07-27 08:11:27

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

Re: Solving Quadratics by Factoring and Graphing

3x(-4+x^2)=0

3x((2+x) (-2+x))=0
x=0

2+x=0

2+-2+x=0+-2
2+-2=0
0+x=0+-2

x=0+-2
0+-2=-2

x=-2

-2+x=0
x=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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#64 2011-07-27 08:12:50

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

Re: Solving Quadratics by Factoring and Graphing

So your roots are ( 0, 2, -2 ). Now let's check to see if they are right!


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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#65 2011-07-27 08:16:28

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

Re: Solving Quadratics by Factoring and Graphing

ok 3*0(2+-2)(2-2))

0(0)(0) yup its correct


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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#66 2011-07-27 08:17:42

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

Re: Solving Quadratics by Factoring and Graphing

Nope! When checking you use one number at a time not all three at once.


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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#67 2011-07-27 08:18:45

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

Re: Solving Quadratics by Factoring and Graphing

ok ill try it again


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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#68 2011-07-27 08:20:27

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

Re: Solving Quadratics by Factoring and Graphing

Okay,1 root at a time and please show your work.


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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#69 2011-07-27 08:27:45

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

Re: Solving Quadratics by Factoring and Graphing

3x((2+x) (-2+x))=0

3*0((2+0)(-2+0)=0

0(2)(-2)=0

0(-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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#70 2011-07-27 08:29:18

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

Re: Solving Quadratics by Factoring and Graphing

3x((2+x) (-2+x))=0

3*2((2+2)(-2+2))=0

6((4)(0))=0

6(0)=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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#71 2011-07-27 08:29:46

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

Re: Solving Quadratics by Factoring and Graphing

3x((2+x) (-2+x))=0

3*0((2+0)(-2+0)=0

That is correct for 0 now repeat those 2 steps for the other two 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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#72 2011-07-27 08:36:54

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

Re: Solving Quadratics by Factoring and Graphing

3x((2+x) (-2+x))=0

3*2((2+2)(-2+2))=0

6((4)(0))=0

6(0)=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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#73 2011-07-27 08:41:57

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

Re: Solving Quadratics by Factoring and Graphing

Correct! One more!


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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#74 2011-07-27 08:43:52

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

Re: Solving Quadratics by Factoring and Graphing

3x((2+x) (-2+x))=0

3*-2((2+-2)(-2+-2))=0

-6((0)(-4))=0
-6(0)=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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#75 2011-07-27 08:44:41

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

Re: Solving Quadratics by Factoring and Graphing

Kayrect! Well done!


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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