if x+2y+3z=0, then show that x^3+4y^3+27z^3=18xyz
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(correct statement to be proved)
We have,
&
Let us consider
•x as a
•2y as b
•3z as c.
Then,
&
We know,
We know, if a + b + c = 0
Then,
. °.
=
=
Hence proved
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