Sistemas Cuadráticos

\[x^2 - 3y = -5 \atop 2x - 3y = -40\]
\[x = \mathbf{?}, y = \mathbf{?}\]

\[x^2 - 3y = 27 \atop -5x - 4y = 18\]
\[x = \mathbf{?}, y = \mathbf{?}\]

\[x^2 - y = 41 \atop -2x + 3y = -3\]
\[x = \mathbf{?}, y = \mathbf{?}\]

\[x^2 + 2y^2 = 36 \atop 2x - 2y = 12\]
\[x = \mathbf{?}, y = \mathbf{?}\]

\[x^2 - 2y^2 = -46 \atop x - y = -7\]
\[x = \mathbf{?}, y = \mathbf{?}\]

\[x^2 - y^2 = 21 \atop -x - 3y = 1\]
\[x = \mathbf{?}, y = \mathbf{?}\]