Question

1. (x + 1)(x - 1) (+ 1)
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Answer 1

Answer:

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May be this help u...

Step-by-step explanation:

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Answer 2

Answer:

$= ( {x}^{2} - 1)(1) \: \: \: \: \: \: \: \: \: \: using \: identity \: \: \: \: \: {(a + b)(a - b)} = {a}^{2} - {b}^{2} \: \: \: \: \: \\ = {x}^{2} - 1$

Step-by-step explanation:

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