Question

If a + b + c = 15 , ab + bc + ac = 25, then find the value of a^2 + b^2 + c^2

Answer 1

Answer:

175=a^2+b^2+c^2

Step-by-step explanation:

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

15^2=a^2+b^2+c^2+2(25)

225-50=175=a^2+b^2+c^2