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

a=9

Explanation:

Let's break this down:

We know x=1, so we can substitute that in to get;

(1+2)^2=a

1+2=3, which gives us,

(3)^2=a

3 squared is 9

Therefore, a=9.

Answer 2

the answer is 9

Explanation:

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