Question

if a² + b² + c² = 250 and ab+bc+ca = 3, find a + b + c​

Answer 1

Answer:

hope the attachment is helpful for uh dear

Answer 2

Answer:

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

(a+b+c)^3=250+2(3)

(a+b+c)^2=250+6=256

a+b+c=16