Factorise : x 3 +27y 3 +8z 3 -18xyz
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x3+27y3+8z .3-18xyz
=30xy3+8z.3-18xyz
=90xy+24z-18xyz
=114xyz-18xyz
= 96
=30xy3+8z.3-18xyz
=90xy+24z-18xyz
=114xyz-18xyz
= 96
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