![(x^2+y^2)+(y^2-x^2)=25+7\\\\\Rightarrow 2y^2=32\\\\\Rightarrow y^2=16\\\\\Rightarrow y=\pm\sqrt{16}~~~~~~~~~~~~~~~~~~~[\textup{taking square root on both sides}]\\\\\Rightarrow y=\pm4.](/tpl/images/0026/4766/fca26.png)
![(\pm4)^2-x^2=7\\\\\Rightarrow 16-x^2=7\\\\\Rightarrow x^2=16-7\\\\\Rightarrow x^2=9\\\\\Rightarrow x=\pm\sqrt9~~~~~~~~~~~~~~~~~~[\textup{taking square root on both sides}]\\\\\Rightarrow x=\pm3.](/tpl/images/0026/4766/6a2c6.png)
Solve the following system. (use (x, y) format in a single answer space.)
x2 + y2 = 25
y...
Mathematics, 28.06.2019 08:10 Adrian12313
Solve the following system. (use (x, y) format in a single answer space.)
x2 + y2 = 25
y2 - x2 = 7
the solution set is
Answers: 3
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