Question

15. The equation of a circle is x² + y2 - 8x + 4y + 4 = 0,
a) Find the radius of the circle and the coordinates of its centre.
b) Find the x-coordinates of the points where the circle crosses the x-axis, giving your answer in
exact form.
c) Show that the point A (6,2V3 - 2)lies on the circle,
d) Show that the equation of the tangent to the circle at A is V3x + 3y = 12/3 - 6
А
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s on the circle. GEOBALE

Answer 1

Answer:

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Step-by-step explanation:

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