SOLUTION: Solve the system: x^2+y^2=63 x^2-3y^2=27

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> SOLUTION: Solve the system: x^2+y^2=63 x^2-3y^2=27      Log On

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Question 436916: Solve the system:
x^2+y^2=63
x^2-3y^2=27
Answer by Alan3354(30993) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+y^2=63
x^2-3y^2=27
----------- Subtract
4y^2 = 36
y = +/- 3
----------
Sub for y and find values of x
x^2 + 9 = 63
x = +/- 3sqrt(2)
Use the + and minus values to get the 4 points of intersection.