Question

Solve using perfect square factoring patterns. y2 + 16y + 64 = 0
A:{–8}
B:{8}
C:{8, –8}
D:{0, –1}

Answer 1

y² + 16y + 64 = 0


We know a² + 2ab + b² = (a + b)²
So,

(y)² + 2 x 8 x y + (8)² = 0
(y + 8)² = 0
y = -8

Correct option A

Answer 2

I think its negetive 8