Practice problem
How many real solutions does the system x2+y2=2016xy=−1\begin{align*} x^2 + y^2 &= 2016 \\ xy &= -1 \end{align*}x2+y2xy=2016=−1 have?
000
111
222
333
444
Type a concept, like “slope” or “photosynthesis”.
