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Equations & Systemshard
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The system {x2−y=0x2+y2=2\begin{cases} x^2 - y = 0 \\ x^2 + y^2 = 2 \end{cases}{x2−y=0x2+y2=2​ represents a parabola and a circle. How many real solution pairs (x,y)(x, y)(x,y) exist?