Question

factorise a^4-b^4 using suitable identity

Answer 1

a⁴ - b⁴

= (a²)² - (b²)²

use


:- [ x² - y² = (x+y)(x - y) ]

so

= (a²+b²)(a²-b²)

♣ hope it can help you. ..♣

Answer 2

Answer:

a^4 - b^4

(a²)² - (b²)²

= ( a² + b² ) ( a² - b² )

= ( a² + b² ) ( a + b ) ( a - b )

Thanks!