Question

without actually calculating cubes find (2)³+(4)³+(-6)³​

Answer 1

We know the corollary: if a+b+c=0 then a3+b3+c3=3abc

Using the above corollary taking a=−15, b=7 and c=8, we have a+b+c=−15+7+8=0 then the value of (−15)3+(7)3+(8)3 is:

(−15)3+(7)3+(8)3=3(−15×7×8)=−2520

Hence, (−15)3+(7)3+(8)3=−2520

Answer 2

Answer:

Answer:0

Answer:0Step-by-step explanation:

Answer:0Step-by-step explanation:(2+4-6)³

0³

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