Question

a+b+c if a^2+b^2+c^2=50and ab+bc+ca=47​

Answer 1

Step-by-step explanation:

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

=50+2×47

=50+94

=144

a+b+c=

$\sqrt{144 } = 12$