Question

4. p2 - 1 factorize​

Answer 1

Answer:

${p}^{2} - 1 = {p}^{2} - {1}^{2} = (p + 1)(p - 1)$

IDENTITY USED :

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

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Answer 2

Answer:

(p+1)(p-1)

p2-1=p2-1^2

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

so (p+1)(p-1)