Please solve this problem in a different sheet!!! Q14
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the answer is -1260
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Let (-12) = a , 7 = b and 5 = c
Now,
a + b + c = - 12 + 7 + 5
= - 12 + 12
= 0
We know that,
If a+b+c = 0, then
a^3 + b^3 + c^3 = 3 abc
=> (-12)^3 + (7)^3 + (5)^2 = 3(-12)(7)(5)
=> (-12)^3 + (7)^3 + (5)^2 = 21 × (-60)
=> (-12)^3 + (7)^3 + (5)^2 = -1260
Now,
a + b + c = - 12 + 7 + 5
= - 12 + 12
= 0
We know that,
If a+b+c = 0, then
a^3 + b^3 + c^3 = 3 abc
=> (-12)^3 + (7)^3 + (5)^2 = 3(-12)(7)(5)
=> (-12)^3 + (7)^3 + (5)^2 = 21 × (-60)
=> (-12)^3 + (7)^3 + (5)^2 = -1260
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