Question

ײ-{-7×y+[-y²+(-ײ+3×y-2y²)]}
Con sus procedimientos

Answer 1

$x^{2}-(-7xy+(-y^{2}+(-x^{2}+3xy-2y^{2})))$

$x^{2}-(-7xy+(-y^{2}-x^{2}+3xy-2y^{2}))$

$x^{2}-(-7xy-y^{2}-x^{2}+3xy-2y^{2})$

$x^{2}+7xy+y^{2}+x^{2}-3xy+2y^{2}$

$3x^{2}+5xy+3y^{2}$