Answer:
x = 3
x = - 2
3^2 -4 = 3 + 2
9 - 4 = 5
5 = 5
-2^2 - 4 = - 2 + 2
4 - 4 = -2 + 2
0 = 0
Explanation:
x^2 -4 = x + 2
x^2 - 4 -x - 2 = 0
x^2 - x - 6 = 0
-3 * 2 = 6 (independent term)
-3 +2 = -1 (coefficient of x)
= (x - 3) (x + 2)
x - 3 = 0. x = 3
x + 2 = 0. x = -2