Evaluate 30cube +20cube minus 50cube - (-12)cube + (7)cube + (5)cube
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[{(30)³+(20)³-(50)³}{-(12)³+(7)³+(5)³]
We know that ,if a+b+c=0
then a³+b³+c³=3abc
=[{3X30X20X-50}{3X-12X7X5}]
=[-90000X-1260]
=[113,400,000]
thus,[{(30)³+(20)³-(50)³}{-(12)³+(7)³+(5)³]=113,400,000
We know that ,if a+b+c=0
then a³+b³+c³=3abc
=[{3X30X20X-50}{3X-12X7X5}]
=[-90000X-1260]
=[113,400,000]
thus,[{(30)³+(20)³-(50)³}{-(12)³+(7)³+(5)³]=113,400,000
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