Question

Спростите выражение 3xy^(xy+2y)-5xy^(xy+2y)

Answer 1

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