Points of intersection between circle and parabola

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Find the points of intersection between circle and a parable:

circle: $x^2 + y^2 - 2x + 4y - 11 = 0$

parable: $y = (-x^2+ 2x + 1 - 2\sqrt{3})$

I don't understand how to solve this, I really tried, but was useless.

If anyone can help me, I am very grateful.

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The point at which the circle and parabola interect, $(x_0,y_0),$ satisfies both equations, so

$x_0^2+y_0^2-2x_0+4y_0-11=0 \tag{1}$

$\color{green}{y_0=-x_0^2+2x_0+1-2\sqrt{3}} \tag{2}$

Now, solve $(1)$ and $(2)$ simultaneously!

Hint: substitute $\color{green}{y_0=-x_0^2+2x_0+1-2\sqrt{3}}$ into $(1)$ to give:

$$x_0^2+[\color{green}{-x_0^2+2x_0+1-2\sqrt{3}}]^2-2x_0+4[\color{green}{-x_0^2+2x_0+1-2\sqrt{3}}]-11=0 \tag{3}.$$

Solve $(3)$, for $x_0$.

Once you have solved $(3)$ for $x_0$, sub this into either $(1)$ or $(2)$ to find $y_0$.