Question

Please help me on this, thank u

Answer 1

D

Explanation:

With no middle term, we factor the quadratic into two binomials of the form (x+a)(x-a) where a is the same number. 64 factors only into 8(8) where the factors are equal. We write in the form (x+8)(x-8).

To find the root or x-intercept, we set equal to 0.

(x+8)(x-8)=0

x=-8,8.