Question

valid 12 Cube + -7 Cube + - 5 cube using suitable identity​

Answer 1

Answer:

-1260

Step-by-step explanation:

Let 12 be a

     -7 be b

     -5 be c

Now a+b+c=12+(-7)+(-5)=0

If a+b+c=0, than a cube + b cube + c cube= 3(a)(b)(c)

So, 3(12)(-5)(-7)=-1260