Question

if a+b+c=9anda^2b^2c^2=35find the value of a^2+b^2+c^2-3abc​

Answer 1

Answer:

a+ b + c= 9

a^2+ b^2+ c^2 = 35

a^2 + b^2 + c^2 +2( ab + bc + ca) = 81

ab + bc + ca = (81-35)/2 = 46/2 = 23

a^3 + b^3 + c^3 - 3abc

= 9( 35 - 23)

= 9( 12)

= 108