x^2 + 2x - 3 = 0(x + 3)(x - 1) = 0x = -3 or x = 1
x^2 - 25 = 0(x + 5)(x - 5) = 0x = -5 or x = 5
x^2 - 9 = 0(x + 3)(x - 3) = 0x = -3 or x = 3
x^2 + 2x - 3 = 0
(x + 3)(x - 1) = 0
x = -3 or x = 1
x^2 - 25 = 0
(x + 5)(x - 5) = 0
x = -5 or x = 5
x^2 - 9 = 0
(x + 3)(x - 3) = 0
x = -3 or x = 3