Question

Simplifique a expressão algébrica:
(x - y )² - x (x - 2y)

Answer 1

(x - y)² - x(x - 2y)
x² - 2xy + y² - x² + 2xy
Resposta = y²

Answer 2

$(x - y )^2 - x (x - 2y)\to\\\\ (x - y )(x - y )- x (x - 2y)\to\\\\x^2-xy-xy+y^2-x^2+2xy\to\\\\ \not x^2-\not x^2-\not2xy+\not2xy+y^2\to\\\\ \large\boxed{\boxed{y^2}}$