Question

by 2
5. Factorise.
(i) a4-b4​

Answer 1

Answer:

a4-b4=(a^2-b^2)(a^2+b^2)

a4-b4=(a-b)(a+b)(a^2+b^2)

Answer 2

Answer:

$( { {a}^{2} })^{2} - ({ {b}^{2} })^{2} \\ = ({a}^{2} - {b}^{2} )( {a}^{2} + {b}^{2} ) \\ = (a + b)(a - b)( {a}^{2} + {b}^{2} )$

Hope that it will help you...