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2 June, 01:01

Does the equation x^2 - 4x + y^2 = - 3 intersect the x-axis?

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  1. 2 June, 04:02
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    We can rewrite the equation into:

    (x-2) ^2+y^2=1

    Therefore the circle's centre is that (2,0). Since the circle's centre lies on the x axis, the circle must intersect the x-axis.
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