Решите уравнение: 1.x(x-2)(x+1)=x²(x-1)
2.(x²-1)(x²+3)=(x²+1)+x
Упростите выражение:
(1-2x)(4x²+2x+1)+8x³
(2x-x)(2+x)(x-1)+x²(x-1)
(x-5)²-4(x+5)²
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