Question

${x}^{4 } - 625$
Factories ​

Answer 1

${x}^{4} - 625 \\ \\ = {( {x}^{2} )}^{2} - {(25)}^{2} \\ \\ = ( {x}^{2} + 25)( {x}^{2} - 25) \\ \\ = ( {x}^{2} + 25)( {x}^{2} - {5}^{2} ) \\ \\ = ( {x}^{2} + 25)(x + 5)(x - 5)$