Practice problem
How many real solutions does the system x2+y2=5x2−y2=1\begin{align*} x^2 + y^2 &= 5 \\ x^2 - y^2 &= 1 \end{align*}x2+y2x2−y2=5=1 have?
4
3
2
1
0
Type a concept, like “slope” or “photosynthesis”.
