Solve. $$\begin{aligned} &y^{2}-4 x^{2}=4\\ &4 x^{2}+y^{2}=4 \end{aligned}$$
Added by Michael M.
Step 1
Step 1:** Add the two given equations: $$y^{2}-4 x^{2} + 4 x^{2}+y^{2} = 4 + 4$$ This simplifies to: $$2y^{2} = 8$$ ** Show more…
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