Question

Nancy found that x=1 is one solution to the quadratic equation (x+2)2=a. What is the value of a?
A. -9
B. -3
C. 3
D. 9

Answer 1

Answer:

D. 9

Step-by-step explanation:

put x = 1

(1+2)^2 = a

a = 3^2 = 9