Ответ:
x = 0, -1
Объяснение:
(x - 4) (x + 5) = -20
x² + x - 20 = -20
x² + x - 20 + 20 = 0
x² + x = 0
x (x + 1) = 0
x = 0
x = -1
Ответ: x = 0, -1
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Ответ:
x = 0, -1
Объяснение:
(x - 4) (x + 5) = -20
x² + x - 20 = -20
x² + x - 20 + 20 = 0
x² + x = 0
x (x + 1) = 0
x = 0
x = -1
Ответ: x = 0, -1