Question

Que9:-Factories X^4
-y^4​

Answer 1

Step-by-step explanation:

${x}^{4} - {y}^{4}$

$= { ({x}^{2} )}^{2} - ( { {y}^{2} )}^{2}$

$= ( {x}^{2} + {y}^{2} )( {x}^{2} - {y}^{2} )$

$= ( {x}^{2} + {y}^{2} )(x + y)(x - y)$