Question

Factorise the following a⁴ -1​

Answer 1

Answer:

answer is that question by a u abhi

Answer 2

+i - i and +1 -1

Step-by-step explanation:

a⁴ -1=(a^2+1)(a^2-1)=0

a^2=-1

a=+i and -i

a^2=1

a=+1 and -1

hope it helps.