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What is the difference?

StartFraction x Over x squared minus 2 x minus 15 EndFraction minus StartFraction 4 Over x squared + 2 x minus 35 EndFraction

What is the difference? StartFraction x Over x squared minus 2 x minus 15 EndFraction-example-1

2 Answers

5 votes

Answer:

D

Explanation:

just so you dont have to read all that

User Samuel Lopez
by
8.6k points
3 votes

Answer:


(x^2+3x-12)/((x+3)(x-5)(x+7))

Explanation:

Factor the denominators, then use a common denominator to add the terms.


(x)/(x^2-2x-15) -(4)/(x^2+2x-35) =(x(x+7))/((x+3)(x-5)(x+7))-(4(x+3))/((x+3)(x-5)(x+7))\\\\=(x^2+7x-4x-12)/((x+3)(x-5)(x+7))=\boxed{(x^2+3x-12)/((x+3)(x-5)(x+7))}

User Roman Safin
by
8.3k points

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