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Prove that xcube + ycube =(x+y)(xsquare …

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Prove that xcube + ycube =(x+y)(xsquare - xy + ysquare
  • 1 answers

Anurag Kumar 4 years, 8 months ago

(x+y)^3=x^3+y^3+3xy(x+y) x^3+y^3=(x+y)^3-3xy(x+y) =(x+y)(x+y)^2-3xy =(x+y)(x^2+y^2+2xy-3xy) x^3+y^3=(x+y)(x^2-xy+y^2)
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