Question

Find the value of a²+b²+c²-ab-bc-ca whena=3,b=2 and c=-1​

Answer 1

Answer:

13

let given expression = x

(a+b+c)*x= a^3+b^3×c^3-3abc

x=(27+8-1-3*3*2*(-1))/(3+2-1)

x=13