Question

- 12 Cube + 7 Cube + 5 cube without actually calculating cubes find the value​

Answer 1

a +b+c = 0, this is the formula for it. Write this in ur exam, u will get full marks mark me brainliest

Answer 2

-12³ + 7³+5³

let 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

=> -12³ + 7³+5³ = 3 ×-12×5×7

=> -12³ + 7³+5³ = -1260