Question 115
For positive real numbers $a$, $b$, $c$ the following holds:
$$ab + bc + ca = 16, \quad a \ge 3.$$
Find the smallest possible value of the expression $2a + b + c$. (Michal Rolínek)
$$ab + bc + ca = 16, \quad a \ge 3.$$
Find the smallest possible value of the expression $2a + b + c$. (Michal Rolínek)