Question

factorise the following expression a⁴-b⁴​

Answer 1

Answer:

(a²+b²)(a+b)(a-b)

Step-by-step explanation:

a⁴-b⁴

= (a²)-(b²)²

= (a²+b²)(a²-b²)

= (a²+b²)(a+b)(a-b)

using formula x²-y² = (x+y)(x-y)