a³+b³+c³=3abc then a+b+c=?
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wkt, (a+b+c)³=a³+b³+c³-3abc
=>(a+b+c)³=a³+b³+c³-(a³+b³+c³)
=>(a+b+c)³=a³+b³+c³-a³-b³-c³
=>(a+b+c)³=0
=>(a+b+c)=0
hope it helps u.....^_^
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