Question

Without actually calculating the cubes, find the value of
(-12) power3+(7) power3+(5) power3

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Answer 1

Answer:

the using the law of exponent=a^m+b^m+c^m=(a+b+c)^m

So (-12+7+5)^3

0^3

0

Answer 2

Answer:

-12+7+5=0

3(-12×7×5)= -12^3+7^3+5^3

3(-420)=-12^3+7^3+5^3

-1260 is the answer