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

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**bronxsystem****Member**- Registered: 2013-06-22
- Posts: 63

Hey all im stuck on this problem and looks like i will need to redo the chapter because im missing something.

Any chance someone can just aware me how to solve this?

Reduce the following fractions to lowest terms

(y^2 + 2y - 15) / ( 2y^2 - 12y + 18)

been up a while my brain all mushy but i know im meant to factor both the numerator and denominator into their prime factors.

i think the denominator would be (2y - 6) (y - 3) is that right?

the numerator im stuck and not sure what to do next

any help appreciated ^^

*Last edited by bronxsystem (2013-07-08 10:48:06)*

Offline

**bronxsystem****Member**- Registered: 2013-06-22
- Posts: 63

(y + 5)(y - 3) / (2y - 6)(y - 3)

so answer

(y + 5) / (2y - 6)

but the denominator can be factored further to 2 (y - 3)

so answer is (y + 5) / 2 ( y- 3)

bah is my logic correct or is there something missing S:

*Last edited by bronxsystem (2013-07-08 10:55:04)*

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

Hi;

You will be able to finish now.

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

**bronxsystem****Member**- Registered: 2013-06-22
- Posts: 63

thanks i will save thread and look over it again so i dont forget ^^

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,238

If you get stuck factoring numerator and denominator then use the quadratic formula on them.

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

Pages: **1**