Question

Select the value that is a root of the equation x^2 + 8x + 16 = 0.
a) x = -4
b) x = 3
c) x = -1
d) x = 5

Answer 1

A because you would subtract 16 from both sides. X^2+8x=-16
-4^2+8(-4)=-16
16+-32=-16
-16=-16