Question

Решите. (2x^3y - 3xy^2 - 2y) - ( x^3y - 5xy^2 - y) = ???

Answer 1

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