Question

if a + b+c = 9 and ab +bc+ca = 26 then find a square +b square +c square
who will give this answer I will mark it as brainlest

Answer 1

Hope it helps you plz mark it as brainliest

Answer 2

Given (a + b + c) = 9 and (ab + bc + ca) = 26

(a + b + c)2 = 92

⇒ a2 + b2 + c2 + 2(ab + bc + ca) = 81

⇒ a2 + b2 + c2 + 2(26) = 81

⇒ a2 + b2 + c2 + 52 = 81

⇒ a2 + b2 + c2 = 81 − 52 = 29

PLZ MARK AS BRAINLIST