Without actually calculating the cube, find the value of (28)^3+(… - Vidyadip

Question

Without actually calculating the cube, find the value of $(28)^3+(-15)^3+(-13)^3$

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Answer

$(28)^3+(-15)^3+(-13)^3$
$=3(28)(-15)(-13)(\because(28)+(-15)+(-13)=0)$
$=16380$

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