Consider a circle whose equation is x2 + y2 - 2x - 8 = 0. which statements are true? select three options.

1- the radius of the circle is 3 units.

2- the center of the circle lies on the x-axis.

3- the center of the circle lies on the y-axis.

4- the standard form of the equation is (x - 1)2 + y2 = 3.

5- the radius of this circle is the same as the radius of the circle whose equation is x2 + y2 = 9.

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