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Ladanapol
@Ladanapol
July 2022
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Преобразуйте многочлен
А) 5a(a-8)-3(a+2)(a-2)
Б) (x^2+4xy-y^2)(2y-x)
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А)
5a(a-8)-3(a+2)(a-2) = 5a²-40a-3(a²-4) = 5a²-40a-3a²+12 =
2a²-40a+12.
Б)
(x²+4xy-y²)(2y-x) = 2x²y-x³+8xy²-4x²y-2y³+xy² =
-x³-2y³-2x²y+9xy².
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Answers & Comments
Б) (x²+4xy-y²)(2y-x) = 2x²y-x³+8xy²-4x²y-2y³+xy² = -x³-2y³-2x²y+9xy².