Question

Factories x4-y4??completely. ​

Answer 1

Dear there is your answer. .!!!

hope it's help you..!!! 4x-4y

4x-4y=0

4(x-y)=0

x=y

Answer 2

Answer:

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

Step-by-step explanation:

Formula:

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

Applying the Formula:

${x}^{4} - {y}^{4} \\ \\ = ({x}^{2})^{2} - ( {y}^{2} )^{2} \\ \\ = ( {x}^{2} + {y}^{2} )( {x}^{2} - {y}^{2} ) \\ \\ = ( {x}^{2} + {y}^{2} )(x + y)(x - y)$