Question

a2+b2+c2=35 ab+bc+ca=23 find a+ b+c

Answer 1

(a+b+c)2 = a2 +b2+c2+2 (ab+ bc +bc)
(a+b+c)2= 35 + 46
a+ b+c = under root 81
a + b +c = 9
hope it helps u plz mark my ans as brainlient