Question

Please help to write the following

Answer 1

Option 2 should be correct

Answer 2

Answer: option 2. x²-1

Explanation:

concept to know: a²-b²=(a+b)(a-b)

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(a+b)(a-b)=a²+b²

(x+1)(x-1)=x²-1

Hope this helps!! :)

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