x^2 + 7x + 10 = 0(x + 5)(x + 2) = 0x = -5, x = -2
x^2 + 4x + 4 = 0(x + 2)(x + 2) = 0x = -2
x^2 + 3x + 2 = 0(x + 1)(x + 2) = 0x = -1, x = -2
x^2 + 5x + 4 = 0(x + 1)(x + 4) = 0x = -1, x = -4
x^2 + x - 2 = 0(x + 2)(x - 1) = 0x = -2, x = 1
x^2 - 1 = 0(x + 1)(x - 1) = 0x = -1, x = 1
x^2 + 7x + 10 = 0
(x + 5)(x + 2) = 0
x = -5, x = -2
x^2 + 4x + 4 = 0
(x + 2)(x + 2) = 0
x = -2
x^2 + 3x + 2 = 0
(x + 1)(x + 2) = 0
x = -1, x = -2
x^2 + 5x + 4 = 0
(x + 1)(x + 4) = 0
x = -1, x = -4
x^2 + x - 2 = 0
(x + 2)(x - 1) = 0
x = -2, x = 1
x^2 - 1 = 0
(x + 1)(x - 1) = 0
x = -1, x = 1