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Parabolas, ellipses, and hyperbolas, oh my! Learn about this eccentric bunch of shapes.

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What is the equation of the circle tangent to the \(x\)-axis with center \((5,-1)\)?

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If the circle \[x^2+y^2-8x+2y +1=0\]

has center \((a,b)\) and radius \(r,\) what is the value of \(a+b+r ?\)

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