Answer :
(x - 2)(x + 8) = 0
x - 2 = 0 or x + 8 = 0
+ 2 + 2 - 8 - 8
x = 2 x = -8
(x - 7)² = 0
√(x - 7)² = √(0)
x - 7 = 0
+ 7 + 7
x = 7
x - 2 = 0 or x + 8 = 0
+ 2 + 2 - 8 - 8
x = 2 x = -8
(x - 7)² = 0
√(x - 7)² = √(0)
x - 7 = 0
+ 7 + 7
x = 7