Question

write the value missing from the perfect square trinomial
x^2+ __ x +64

Answer 1

Missing value=16

Answer 2

an expanded perfect square is

(x + a)^2 = x^2 + 2ax + a^2

take the square root of 64 then double it to find your answer

Answer 3

(x+8)(x+8)=x^2+8x
+8x+64
x^2+16x+64