Find the center and radius of the circle x2 - 4x + y2 + 2y + 1 = 0. Then find the equations of the tangent lines to this circle from the point P(3,1).
Added by Milagros A.
Step 1
To find the center and radius of the circle, we need to rewrite the equation in standard form, which is (x - h)^2 + (y - k)^2 = r^2, where (h, k) is the center of the circle and r is the radius. To rewrite the equation x^2 - 4x + y^2 + 2y + 1 = 0 in standard Show more…
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