x² + 6x + 5
Решим уравнение:
x² + 6x + 5 = 0
D = 36 - 4 * 5 = 36 - 20 = 16
x1 = (-6 - 4) / 2 = -10 / 2 = -5
x2 = (-6 + 4) / 2 = -2 / 2 = -1
Тогда:
x² + 6x + 5 = (x - (-5))(x - (-1)) = (x + 5)(x + 1)
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Verified answer
x² + 6x + 5
Решим уравнение:
x² + 6x + 5 = 0
D = 36 - 4 * 5 = 36 - 20 = 16
x1 = (-6 - 4) / 2 = -10 / 2 = -5
x2 = (-6 + 4) / 2 = -2 / 2 = -1
Тогда:
x² + 6x + 5 = (x - (-5))(x - (-1)) = (x + 5)(x + 1)