Question

Разложить на множители x^2-x-y^2-y

Answer 1

x² - x - y² - y = (x² - y²) - (x + y) = (x + y)(x - y) - (x + y) = (x + y)(x - y - 1)

Answer 2

x^2-x-y^2-y=x(x-1)-y(y-1)?