Algebra
# Completing The Square

As $x, y, z$ ranges over all possible real numbers, what is the minimum value of

$3x^2+12y^2+27z^2-4xy-12yz-6xz-8y-24z+100 ?$

This problem has been proposed by Hui.

$\begin{cases}x^4+2x^3-y=-\frac{1}{4}+\sqrt{3}\\ y^4+2y^3-x=-\frac{1}{4}-\sqrt{3} \end{cases}$

All the ordered pairs of real numbers that satisfy the system of equations above are $(x_1,y_1),(x_2,y_2),...(x_n,y_n)$. Find the value of $x_1+x_2+...+x_n+y_1+...y_n$ correct upto two decimal places.

- If you think there are infinite solutions then answer 777 and if you think no real solutions answer 666.
- Ordered pair means (11,12),(12,11) are considered different.

$P(x)=(x^2+5000x-1)^2+(2x+5000)^2$

Let $P(x)$ be a polynomial, then find the sum of all the real solutions to the equation $P(x)=\text{min}(P(x)).$