SOLUTION: expess in lowest terma 1. y^2-y-12/y^2-9 2. 3x^2-6x-72/2x^3-8x-64 3. u^2+16u+63/u+7 * 1/u+9 I had 30 problems to I cant understand the last 3. Could someone help

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Question 155256: expess in lowest terma
1. y^2-y-12/y^2-9
2. 3x^2-6x-72/2x^3-8x-64
3. u^2+16u+63/u+7 * 1/u+9
I had 30 problems to I cant understand the last 3. Could someone help me please.

Found 2 solutions by jim_thompson5910, Earlsdon:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
I'll do the first two to get you started

# 1

Start with the given expression


Factor the numerator


Factor the denominator


Highlight the common terms


Cancel out the common terms


Simplify


So simplifies to





# 2

Are you sure that the denominator is not ?


Start with the given expression


Factor the numerator


Factor the denominator


Highlight the common terms


Cancel out the common terms


Simplify


Distribute


So simplifies to

Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!
Express in lowest terms:
Factor the numerators and the denominators:
1) Cancel as indicated to get:

-----------------
2) =
-----------------
3) =

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