Question

Expand (x - y)³( Using Identities).

Answer 1

hi friend here is your answer
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${(x -y}^{)3} = {x}^{3} - 3x {}^{2} y + 3xy ^{2} - y ^{3}$

Answer 2

Hey friend,

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$(x-y)^3$

=> $(x-y)(x-y)(x-y)$

=> $(x^2 + y^2 -2xy)(x-y)$

=> $x^3 - x^2y + xy^2 - y^3 - 2x^2y + 2xy^2$

=> $x^3 - y^3 -3x^2y + 3xy^2$

=> $<em><strong>x^3 - y^3 - 3xy (x-y)</strong></em>$

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Hope this helped you !!