Question

What is the value of X in the following equation (x-2)(x+8)=0 and (x-7) to the second power=0

Answer 1

(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