Question

(3׳-3ײy+5y²-6y³)+(7ײy-5׳+y³-6×y²)

Answer 1

$(3 x^{3} - 3 x^{2}y + 5 y^{2} - 6y ^{3} ) + (7 x^{2} y - 5x ^{3} + y^{3} - 6x y^{2} ) = 3x^{3} - 3 x^{2} y + 5 y^{2} - 6y^3} + 7 x^{2} y - 5 x^{3} + y^{3} - 6xy^{2} = -2x^{3} + 4 x^{2}y - 6xy^{2} + 5y^{2} -5y^{3}$