Math Is Fun Forum

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

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

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

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

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.

krassi_holmz

Real Member

Registered: 2005-12-02

Posts: 1,905

Re: Math Final

I think it's

---

IPBLE:  Increasing Performance By Lowering Expectations.