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#1 2006-05-17 10:03:53

stormswimmer
Member
Registered: 2006-01-27
Posts: 8

Math Final

I am studying for my Math final and i have trouble with this one type of problem. For Instance
Click on the Image to make it bigger

View Image: Untitled-1 copy.jpg

Last edited by stormswimmer (2006-05-17 10:05:21)

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#2 2006-05-17 11:58:59

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,535

Re: Math Final

The trick is to give them the same denominator.

How can you turn (w-2) into (w²+w-6) ?

By guesswork I figured that you could multiply by (w+3):

(w-2)(w+3) = w²+3w-2w-6=w²+w-6

So, multiply top and bottom of the first term by (w+3), then combine the terms and simplify


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

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#3 2006-05-17 12:28:18

liuv
Member
Registered: 2006-05-14
Posts: 29

Re: Math Final

:D

Last edited by liuv (2006-05-17 12:40:32)


I'm from Beijing China.

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#4 2006-05-19 01:06:10

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,908

Re: Math Final

I think it's


IPBLE:  Increasing Performance By Lowering Expectations.

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