Question

(ii) 2x(x - y2) - 3y(xy + 2x) - xy(x + y)​

Answer 1

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$2x(x - {y}^{2} ) - 3y(xy + 2x) - xy(x + y) \\ = 2 {x}^{2} - 2x {y}^{2} - 3x {y}^{2} - 6xy - {x}^{2} y - x {y}^{2} \\ = 2 {x}^{2} - 5x {y}^{2} - 6xy - {x}^{2} y - x {y}^{2}$