Please answer this question!! No spams!!
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The solution is in the attachment.
Few steps of first picture is also included in second step.
Few steps of first picture is also included in second step.
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Anonymous:
It's an identity that if ( a + b + c ) = 0 then a³ + b³ + c³ = 3abc
Let me give it's proof in my answer
Oh
Check the solution once more
I shall try.
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