Question

Simplify (a+b)(2a+b)+(a+2b)(a-b)

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(a+b)(2a+b)+(a+2b)(a-b)

2a^2+ab+2ab+b^2+a^2-ab+2ab-2b^2

3a^2+4ab-b^2