Question

Factorise: a^4 - b^4
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Answer 1

Step-by-step explanation:

${a}^{4} - {b}^{4}$

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

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

Hope it helps you:)

Answer 2

(a²)² -( b²) ²

(a²+b²) (a²-b²)

[(a+b) ²-2ab][(a+b) (a-b) ]