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Mathematics 9 Online
OpenStudy (anonymous):

Solve the system of equations: x^2+y^2=25 x^2-y^2=25

hero (hero):

Hint: \[y^2 - y^2 = 0\]

OpenStudy (anonymous):

Hmm I'm still confused. I tried working it as having both left sides of the equations equal to eachother... but I just don't get it

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