Question

please answer these questions​

Answer 1

here is your answer plz mark me Brainliest

Answer 2

let take a+b+c is equal to x

(a+b+c)²=a²+b²+c²+2(ab+bc+ac)

x²= 35 + 2(23)

x²=35 + 46

x²=81

x=9

a+b+c = 9