Question

Nancy found that x = 1 is one solution to the quadratic equation (x + 2)2 = a. What is the value of a?

Answer 1

answer is A

Explanation:

Answer 2

a=9

EXPLANATION

The given quadratic equation is

`{(x + 2)}^(2) = a`

If x=1 is a solution, then it must satisfy this equation:

`{(1 + 2)}^(2) = a`

`{3}^(2) = a`

`a = 9`

Therefore the value of 'a' is 9