Question

$x(2x - y) - 2y(x - y) +xy(x + 3)$

Answer 1

x(2x -y) -2y(x -y) +xy(x +3)
2x² -xy -2xy +2y² +x²y +3xy
2x² -3xy +2y² +x²y +3xy
=2x² +2y² +x²y