\(M=\left(x-\frac{3}{2}\right)^2+\frac{31}{4}\ge\frac{31}{4}\)
\(M_{min}=\frac{31}{4}\) khi \(x=\frac{3}{2}\)
\(N=\left(x+\frac{1}{2}\right)^2+4\left(y+\frac{1}{8}\right)^2+\frac{299}{16}\ge\frac{299}{16}\)
\(N_{min}=\frac{299}{16}\) khi \(\left\{{}\begin{matrix}x=-\frac{1}{2}\\y=-\frac{1}{8}\end{matrix}\right.\)