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#1 2006-05-01 17:36:07

4littlepiggiesmom
Member
Registered: 2006-01-09
Posts: 42

Simplifiy the expression..please help dad says they all need more info

I think I;ve got these right but mom's gone for the week and dad won't even look at math over 4th grade??? So please if any one could tell me if I have these right and just tell me which are wrong so I can try firguring the ones I have wrong again! APB   The instructions on 2-58 just say Simplifiy the Expression...

1.(x+3)/(x^3-x^2-6x) Divided by  ((x^2-9)/ x^2+x-12)= (x+4)/ (x)(x+2)(x-3)

2. (x^3+x^2)/(x^2-16)  *  (x+4)/(3x^4+x^3-2x^2) = 1/(x-4)

3.(12x-4)/(x-1)  +  (4x)/(x-1) = 48x

4. (5)/(2x^2)  + (4)/(3x)  =  (8x+15)/(6x^2)

5. (4)/(x+3)  +  (3x)/(x-2) = (3x^2+4x+1)/(x^2 +x-6) Should I simplifiy that down  to (3x+1)(x+1)/(x+3)(x-2) or not???

6. (5x+1)/(x-3) - (2x)/(x-1)  =  (7x^2-4x-3)/(x^2-4x+3)  I haven't broken it down as I can't tell if I;m suppose to?

I just gave them number 1-6 out of 56 I have done! The rest look right but these 6 I'm not sure on!

Again please just tell me if I'm right as I really want to figure them out by myself! Thanks... APB

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#2 2006-05-05 02:35:58

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,905

Re: Simplifiy the expression..please help dad says they all need more info

1.


2.

3.


IPBLE:  Increasing Performance By Lowering Expectations.

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#3 2006-05-05 02:41:32

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,905

Re: Simplifiy the expression..please help dad says they all need more info

4.


IPBLE:  Increasing Performance By Lowering Expectations.

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#4 2006-05-05 16:16:38

renjer
Member
Registered: 2006-04-29
Posts: 50

Re: Simplifiy the expression..please help dad says they all need more info

You got the numerator in your answer wrong for 5 and 6, that's according to Scientific Workplace.

Btw, how do you enter the equations directly in here? I tried using the Latex syntax to do it but it wouldn't display properly.

Last edited by renjer (2006-05-05 16:26:07)

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#5 2006-05-05 16:32:52

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,954

Re: Simplifiy the expression..please help dad says they all need more info

renjer,
To view how LaTeX is used, you can try using 'quote' of a message in which it has been used.

For example,

would produce


It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#6 2006-05-05 19:58:47

renjer
Member
Registered: 2006-04-29
Posts: 50

Re: Simplifiy the expression..please help dad says they all need more info

I didn't know you had to put them in [math] tags. big_smile

Last edited by renjer (2006-05-05 19:59:25)

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