Question

Factorize a^4 - 1/b^4

Answer 1

Answer:

(a⁴-1/b⁴)

by using identity, a²-b²=(a-b) (a+b)

so, a⁴-1/b⁴=(a²-1/b²) (a²+1/b²)

=(a+1/b) (a-1/b) (a²+1/b²)