Question

How can you simplify (image)?

A.Divide the numerator and denominator by (x – 21).

B.Divide the numerator and denominator by (x + 7).

C.Divide the numerator and denominator by (x – 3).

D.Divide the numerator and denominator by (x – 5).

Answer 1

B.

x^2+2-35 would factor into (x+7)(x-5)

×^2+4-21 would factor into (x+7)(x-3)