Question

(x + 2y) (-3x - y) - (x + y) (x - y) + (x - 2y) (- 2x + y)​

Answer 1

Answer:

=(x + 2y) (-3x - y) - (x + y) (x - y) + (x - 2y) (- 2x + y)

=(-3x²-xy-6xy-2y²)-(x²-xy+xy-y²)+(-2x²+xy+4xy-2y²)

= -3x²-7xy-2y²-x²+y²-2x²+5xy-2y²

= -6x²-2xy-3y²