Question

Which value is needed to create a perfect square trinomial from the expression x2 + 8x + _____?

Answer 1

the answer is 16

i know this because my smartness got it right

Answer 2

To solve this problem, divide 8 by 2 and then square the product.


`x^2 + 8x`

`(8)/(2) = 4`
Square 4

`4^2 = 16`
Answer =
`x^2 + 8x + 16`