Without actually calculating the cubes find the value of
Asked by admin @ in Math viewed by 385 People
Without actually calculating the cubes, find the value of (-12)³+(7)³+(5)³
Asked by admin @ in Math viewed by 385 People
Without actually calculating the cubes, find the value of (-12)³+(7)³+(5)³
Answered by admin @
Answer:
-1260
Step-by-step explanation:
Here,
a= -12 ; b=7 ; c=5
a+b+c=-12+7+5
=0
We know that if a+b+c=0 , then a³+b³+c³=3abc
Then,
(-12)³+7³+5³
=3(-12)(7)(5)
= -1260
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