Question

a+b+c=9 ; ab+bc+c=26;a²+b²+c²=?

Answer 1

Hello!


Here is your answer!

$(a + b + c) {}^{2} = {a}^{2} + {b}^{2} + {c}^{2} \\ + 2(ab + bc + ca)$


Putting the Values!




${9}^{2} = {a}^{2} + {b}^{2} + {c}^{2} + 2 \times 26$


${a}^{2} + {b}^{2} + {c}^{2} = 81 - 52 = 29$



Hope it helps u!

Answer 2

Answer:

hi friend

Step-by-step explanation:

here is your question to answer

I hope you understand