Question

Simplify the following: (x+y) (2x+y)+(x+2y)(x-y)

Answer 1

Answer:

Step-by-step explanation:

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

2 x² + x y + 2 x y + y² + x² - x y + 2 x y - 2 y²

3 x² - y² + 4 x y

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