Question

without actually calculating the cubes find the value of each of the following ​

Answer 1

Answer:

- 1260

Step-by-step explanation:

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

here -12+7+5=0

we know a^3+b^3+c^3-3abc=(a+b+c)(a^2+b^2+c^3+2ab+2bc+2ca)

but a+b+c=0

=> rhs = 0

=> a^3+b^3+c^3= 3abc

=3*-12*7*5

= - 1260

Brainliest plz