Fill in the blank with a number to make the expression a perfect square.

Question

Fill in the blank with a number to make the expression a perfect square.

y^2+16y+___

Answer 1

64.

take the coefficient of the linear term, divide it in two, square it

16/2 squared = 8^2 = 64

y^2 + 16y + 64 =

(y+8)^2