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

x² - 4x + 3 = 0
 x1 = 1 ,   x2 = 3
x² + 21x + 98 = 0
 x1 = -14 ,   x2 = -7
x² - 15x + 36 = 0
 x1 = 3 ,   x2 = 12
x² + 17x = 0
 x1 = -17 ,   x2 = 0
x² - 32x + 255 = 0
 x1 = 15 ,   x2 = 17
x² + 13x + 42 = 0
 x1 = -7 ,   x2 = -6
x² - 16x + 60 = 0
 x1 = 6 ,   x2 = 10
x² + 2x - 99 = 0
 x1 = -11 ,   x2 = 9
x² - 34x + 288 = 0
 x1 = 16 ,   x2 = 18
x² - x - 6 = 0
 x1 = -2 ,   x2 = 3
x² + 9x - 22 = 0
 x1 = -11 ,   x2 = 2
x² + 10x - 11 = 0
 x1 = -11 ,   x2 = 1
x² + 4x - 221 = 0
 x1 = -17 ,   x2 = 13
x² - 10x - 75 = 0
 x1 = -5 ,   x2 = 15
x² + 9x + 14 = 0
 x1 = -7 ,   x2 = -2
x² - 16x + 28 = 0
 x1 = 2 ,   x2 = 14
x² - 4x - 32 = 0
 x1 = -4 ,   x2 = 8
x² + 3x - 340 = 0
 x1 = -20 ,   x2 = 17
x² + 8x - 128 = 0
 x1 = -16 ,   x2 = 8
x² - 12x + 32 = 0
 x1 = 4 ,   x2 = 8