Question

factories X4+Y4-7x2y2​

Answer 1

Please repost your question mate I can't understand what you write

Answer 2

Step-by-step explanation:

${x}^{4} + {y}^{4} - 7 {x}^{2} {y}^{2}$

$({( {x}^{2} ) {}^{2} + ( {y}^{2} ) {}^{2} - 2 {x}^{2} y {}^{2}}) - 5 {x}^{2} {y}^{2}$

$( {x}^{2} - {y}^{2} ) {}^{2} - ( \sqrt{5xy} ) {}^{2}$

$( {x}^{2} - {y}^{2} + \sqrt{5xy} )( {x}^{2} - {y}^{2} - \sqrt{5xy} )$

Thanks