Question

a^4-1(factorise it)​

Answer 1

Answer:

$\huge# \\\> a ^{4} - 1 \\ = > (a { }^{2} - 1)(a {}^{2} + 1) \\ = > (a - 1)(a + 1)(a {}^{2} + 1)$

Answer 2

Answer:

Step-by-step explanation:

A^4 - 1

= (A^2)^2 - 1^2

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

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