Question

x ² - 5x - y ² - 5y

Answer 1

\(x^2-5x-y^2-5y\)

\(=x^2-y^2-5\left(x+y\right)\)

\(=\left(x-y\right)\left(x+y\right)-5\left(x+y\right)\)

\(=\left(x+y\right)\left(x-y-5\right)\)