Question

If a^2+b^2+c^2=25

0and ab+bc+ca=3 find a+b+c

Answer 1

Answer:

Step-by-step explanation:

Given that, a²+b²+c²= 250 and ab+bc+ca = 3

=> (a+b+c)² = a²+b²+c²+2(ab+bc+ca)

=> (a+b+c)² = 250+2(3)

=> (a+b+c)² = 256

=> (a+b+c) = √256

=> (a+b+c) = 16

Hence a+b+c = 16