Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

- Index
- » Help Me !
- »
**Math Final**

Pages: **1**

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

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)*

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,659

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

Offline

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

:D

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

I'm from Beijing China.

Offline

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

I think it's

IPBLE: Increasing Performance By Lowering Expectations.

Offline

Pages: **1**

- Index
- » Help Me !
- »
**Math Final**