Question

Преобразуйте в многочлен(y-2)(y+3)-(y-1)^2

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Answer 1

$(y - 2)(y - 3) - (y - 1) {}^{2} = {y}^{2} - 3y - 2y + 6 - ( {y}^{2} - 2y + 1) = {y}^{2} - 5y + 6 - {y}^{2} + 2y - 1 = - 3y + 5$