Question

if a²+b²+c²=50 and ab+bc+ca=73 then a+b+c=​

Answer 1

Answer:

14

Step-by-step explanation:

Step 1:

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

Step 2:

Putting the values.

= 50 + 2(73)

= 50 + 146

= 196

$\sqrt{ {(a + b + c)}^{2} } = \sqrt{196}$

a + b+ c = 14