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If X + Y + Z is equal to zero then write the value of x cube + y cube + 8

Posted by Krishna Lau 8 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Rashmi Bajpayee 8 years, 3 months ago

If x + y + z = 0, then x^{3} + y^{3} + z^{3} = 3xyz

Therefore, x^{3} + y^{3} + 8 = x^{3} + y^{3} + 2^{3} = 3(x)(y)(2) = 6xy

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CBSE > Class 09 > Mathematics