Question

hello guys
how to solve this problem
please help me
(x + y)(2x + y)+ (x + 2y)(x - y).​

Answer 1

Answer:

3x^2 + 4xy + y^2 is the answer.

Step-by-step explanation:

(x + y)(2x + y) + (x + 2y)(x - y)

2x^2 + xy + 2xy + y^2 + x^2 - xy + 2xy - 2y^2

(2x^2 + x^2) + (xy - xy) + (2xy + 2xy) + (y^2 - 2y^2)

3x^2 + 0 + 4xy - y^2

3x^2 + 4xy + y^2

Hope it helps!!