Question

(b) (x - y) (x2 +xy + y2)​

Answer 1

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

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

${x}^{3} + {x}^{2} y + x {y}^{2} - {x}^{2} y - x {y}^{2} + {y}^{3}$

${x}^{3} - {y}^{3}$