Question

$(x + y)( {x} ^{2} - xy + {y}^{2} )$
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Answer 1

Answer:

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

Step-by-step explanation:

$(x + y)( {x}^{2} - xy + {y}^{2} ) = x( {x}^{2} - xy + {y}^{2} ) + y({x}^{2} - xy + {y}^{2}) \\ \\ = {x}^{3} - {x}^{2} y + x {y}^{2} + {x}^{2} y - x {y}^{2} + {y}^{3} \\ \\ = {x}^{3} + {y}^{3}$