Question

Answer 1

a: \(=\dfrac{7xy\cdot\left(x-y\right)\cdot\left(x-y\right)\cdot x^4}{7xy\cdot\left(x-y\right)\cdot y^2}=\dfrac{x^4\left(x-y\right)}{y^2}\)

a: \(=\dfrac{5xy\left(x+y\right)\cdot2y}{5xy\left(x+y\right)\cdot\left(x+y\right)^2\cdot3}=\dfrac{2y}{3\left(x+y\right)^2}\)