Question

If a^2+b^2+c^2=250 and ab+bc+ac=3 find a+b+c

Answer 1

(a + b + c )^2= a ^2 + b ^2 + c ^ + 2(ab + bc + ca)
= 250 + 2*3
= 250+6 = 256
(a + b + c) = √256 = 16 ans.

Answer 2

hope this will help you