Question

(a+b+c) = 9

ab+bc+ca = 23

$a^{2} +b^{2} +c^{2} = ?$

Answer 1

Answer:

2 +3+4====9

10+10+3===23

Answer 2

Hey mate

a+b+c=9[squaring both sides]

$a^{2} +b^{2} +c^{2}$+2ab+2bc+2ca=81

[tex]a^{2} +b^{2} +c^{2} = ?[/tex] +2(ab+bc+ca)=81

tex]a^{2} +b^{2} +c^{2} = ?[/tex] +2(ab+bc+ca)=81$a^{2} +b^{2} +c^{2} = ?$ +46=81

tex]a^{2} +b^{2} +c^{2} = ?[/tex] +2(ab+bc+ca)=81$a^{2} +b^{2} +c^{2} = ?$ +46=81$a^{2} +b^{2} +c^{2} = ?$ =81-46

tex]a^{2} +b^{2} +c^{2} = ?[/tex] +2(ab+bc+ca)=81$a^{2} +b^{2} +c^{2} = ?$ +46=81$a^{2} +b^{2} +c^{2} = ?$ =81-46$a^{2} +b^{2} +c^{2} = ?$ =35

thnx n mark 『follow ya』❦❥❤