Question

Someone help me please

Answer 1

-7 / (x^2 +3x-10)

Explanation:

1/ (x+5) - 1/(x-2)

we need to get a common denominator

1/ (x+5) * (x-2)/ (x-2) - 1/(x-2) * (x+5)/(x+5)

(x-2) / (x+5)(x-2) - (x+5)/ (x+5)(x-2)

Combine the numerator

(x-2 -x-5)/ (x+5)(x-2)

-7/(x+5)(x-2)

FOIL the denominator

-7 /( x^2 -2x +5x -10)

Combine terms in the denominator

-7 / (x^2 +3x-10)