Question

${a}^{2} + {b}^{2} + {c}^{2} = 14 \\ then \: how \: \\ ab + bc + ca \geqslant$

Answer 1

formula. (a+b) (a-b)=a square. bs
14

Answer 2

I think ur answer will be 3

Hope this helps you friend
Thanks ✌️ ✌️