Question

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

Answer 1

(x + 2)·2 = a

(1 + 2)·2 = a

3·2 = a

a = 6

Answer 2

insert 1 into your equation (1+2)2=a  1+2=3 and 3X2=6 so therefore a=6