Question

factorise
x ki power 4 minus y ki power 4
​

Answer 1

Step-by-step explanation:

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

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

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

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