Löse die folgenden quadratischen Gleichungen x² + px + q = 0

x² - 18x + 56 = 0
 x1 = 4 ,   x2 = 14
x² - 16x + 15 = 0
 x1 = 1 ,   x2 = 15
x² + 24x + 95 = 0
 x1 = -19 ,   x2 = -5
x² + 19x + 84 = 0
 x1 = -12 ,   x2 = -7
x² - 100 = 0
 x1 = -10 ,   x2 = 10
x² - 7x - 144 = 0
 x1 = -9 ,   x2 = 16
x² + 18x + 80 = 0
 x1 = -10 ,   x2 = -8
x² - 10x - 56 = 0
 x1 = -4 ,   x2 = 14
x² + 5x - 150 = 0
 x1 = -15 ,   x2 = 10
x² - 7x - 44 = 0
 x1 = -4 ,   x2 = 11
x² - 2x = 0
 x1 = 0 ,   x2 = 2
x² + 17x + 16 = 0
 x1 = -16 ,   x2 = -1
x² + 6x - 91 = 0
 x1 = -13 ,   x2 = 7
x² + 3x - 88 = 0
 x1 = -11 ,   x2 = 8
x² + 4x - 285 = 0
 x1 = -19 ,   x2 = 15
x² + 10x - 24 = 0
 x1 = -12 ,   x2 = 2
x² + 7x - 170 = 0
 x1 = -17 ,   x2 = 10
x² + 11x - 42 = 0
 x1 = -14 ,   x2 = 3
x² + 3x - 10 = 0
 x1 = -5 ,   x2 = 2
x² - 12x - 108 = 0
 x1 = -6 ,   x2 = 18