Question

$(x - y)(2x + y) + (x - 2y)(x + y)$
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Answer 1

Answer:

(x - y ) (2x + y)  + (x-2y) (x + y)

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

3x^2 - 3y^2

Step-by-step explanation:

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Answer 2

Answer:

3x² - 3y² - 2xy is the answer

Step-by-step explanation:

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

(2x²+ xy - 2xy - y²) + (x² + xy - 2xy -2y²)

2x² + x² - y² - 2y² + 2xy - 4xy

3x² - 3y² - 2xy