Question

1) (a
$(a + b)(a - b)$
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Answer 1

Answer:

$(a + b)(a - b) \\ (a - a)( - b - b) \\ - 2b$

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Answer 2

Answer:

(a+b) - (b-a)

Step-by-step explanation:

(a+a) - (b-b)

2a - 2b