Question

If a^2+b^2+c^2=125 and ab + bc + ca =50 . Find the value of (a+b+c)

Answer 1

hope it helps you................

Answer 2

Step-by-step explanation:

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

since, a^2 + b^2 + c^2 = 125 and ab + bc + ca = 50

(a + b + c)^2 = 125 + 2(50)

= 225

= 15 is the answer.