ButterflyEVE
27.01.2021 •
Mathematics
(4x2 +6x + 7) - (-8x2 – 2x + 6)
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Ответ:
w≠-7
Step-by-step explanation:
w-2
w+7
The denominator cannot be zero, so
w+7 cannot be zero
w+7≠0
Subtract 7 from each side
w+7-7 ≠0-7
w≠-7