Объяснение:
4x²y-2xy-3 = 4(-2)²×1 - 2(-2)×1 - 3 = 16+4-3 = 17
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Объяснение:
4x²y-2xy-3 = 4(-2)²×1 - 2(-2)×1 - 3 = 16+4-3 = 17