Question

factors of a²-1 plz answer​

Answer 1

Step-by-step explanation:

factor of a2-1 = 0

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Answer 2

We can use the identity

${a}^{2} \: - {b}^{2} = \: (a - b)(a + b)$

So, we have

${a}^{2} - 1 = \: (a - 1)(a + 1)$

So the two factors are (a-1) and (a+1).

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