Question

if a+B+C=9 and abb+bc+ca=23 than a^3+b^3+c^3+3abc=​

Answer 1

Answer:

108

*explanation*

(a+b+c)^2 = (a^2+b2+c2 + 2ab+2bc+2ca)

9^2= a2+b2+c2+ 2(ab+bc+ca)

81 = a2+b2+c2 + 46

a2+b2+c2 = 35

(a+b+c) (a^2+b^2+c^2-ab-bc-ca)

(9) (35-(23))

(9) (12)

108 ans.

Answer 2

Answer:

that I know...

but how here 6 came...?