Question

Plz someone give me the answer of 14 th only

Answer 1

if a+b+c=0.
then a^3+b^3+c^3=3abc
so ur ans is 3×(-12)×5×7
=-1260

Answer 2

We know,
A³+B³+C³ = (A+B+C) (A²+B²+C²-AB - BC-CA) +3ABC...

SO,
(-12)³+(7)³+(5)³=(-12+7+5){(-12)²+(7)²+(5)²+84-35+60) +3×(-12)(7)(5)= -1260(Ans)...

HOPE IT HELPED YOU A LOT