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Автор - vladlupookov

Помогите плиз
Преобразуйте в многочлен
5y(y+2)+x(y-5)^2
(x-2)(x+3)-(x-1)^2

Ответ

Автор - Sleeplessness1

5у(у + 2) + х(у - 5)^2 = 5у^2 + 10у + х(у^2 - 10у + 25) = 5у^2 + 10у + ху^2 - 10ху + 25х

(х - 2)(х + 3) - (х - 1)^2 = х^2 + 3х - 2х - 6 - х^2 + 2х - 1 = 3х - 7

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