Question

What is the difference? x/x^2-2x-15 -4/x^2+2x-35 '

Answer 1

Answer:

Option D.

Step-by-step explanation:

The given expression is :$\frac{x}{x^{2}-2x-15 } -\frac{4}{x^{2} +2x-35}$

Factoring the denominators we have:

$\frac{x}{(x-5)(x+3)} -\frac{4}{(x+7)(x-5)}$

Making denominators same and simplifying the fractions  we have:

$\frac{x^{2}+7x-4x-12 }{(x-5)(x+3)(x+7)} =\frac{x^{2}+3x-12 }{(x+3)(x-5)(x+7)}$

Option D is the right anser.

Answer 2

Answer:

D!!!

Step-by-step explanation: