the equation x^2+y^2-4x+2y-20=0. Find its center

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter4: Systems Of Linear Equations
Section4.6: Solve Systems Of Equations Using Determinants
Problem 4.104TI: Determine whether the points (4,1),(6,2) and (2,4) are collinear.
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the equation x^2+y^2-4x+2y-20=0. Find its center

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