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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: 1,908

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: 1,908

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: 51

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,209

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,[math] \frac{a^{2}}{b^{2}} [/math]

would produce


Character is who you are when no one is looking.

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

renjer
Member
Registered: 2006-04-29
Posts: 51

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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