Question

Simplify x2-x4-32/x2+7x+13

Answer 1

remember

(ab)/(ac)=b/c

find common factor

factor them

x^2-4x-32=(x-8)(x+4)

x^2+7x+12=(x+3)(x+4)

so

\frac{x^2-4x-32}{x^2+7x+12}= \frac{(x-8)(x+4)}{(x+3)(x+4)}= \frac{x-8}{x+3}