Question

упростите выражение
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Answer 1

Ответ:

1. -9-6x-x^2 + 5-10x+5x^2
2. -3-16x+4x^2

Answer 2

-(3+х)²+5(1-х)² = -(9+6х+х²) + 5(1-2х+х²) = -9-6х-х²+5-10х+5х²= -4-16х+4х²