Question

y^3-(3y+y^2)(y-3) при y=-1/3
Срочно , упростите выражение

Answer 1

${y}^{3} - (3y + {y}^{2} )(y - 3) = {y}^{3} (3 {y}^{2} - 9y + {y}^{3} - 3 {y}^{2} ) = 9y = 9 \times \bigg( - \frac{1}{3} \bigg) = \bf \huge \: - 3.$