danleaz01
16.10.2020 •
Mathematics
2x2 + 4x — 7 = x2 – 2x
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Ответ:
x = -7 or x = 1
Step-by-step explanation:
2x^2 + 4x - 7 = x^2 - 2x
x^2 + 6x - 7 = 0
(x + 7)(x - 1) = 0
x + 7 = 0 or x - 1 = 0
x = -7 or x = 1
Ответ:
2,125
Step-by-step explanation: