Question

(x – y + 2) (x^2

+ y^2

+ 4 + xy + 2y – 2x)
Find the following products by using appropriate identities:​

Answer 1

Answer:

(x-y+2)(x²+y²+4+xy+2y-2x)

=x³+(-y)³+2³-3(x)(-y)(2)

=x³-y³+8+6xy