Question

a²-1 factorise
pls help full sum​

Answer 1

Answer:

1^2 = 1

( a^2-b^2 ) = (a+b)(a-b)

so your answer is

(a^2-1^2) = (a-1)(a+1)

so your answer is (a-1)(a+1)

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Answer 2

Answer:

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

I hope it help you........