1. **State the problem:** Find the points of intersection between the circle $$(x+2)^2 + (y-4)^2 = 5$$ and the line $$y = -2x + 4$$.
2. **Formula and rules:** To find intersection points, substitute the expression for $$y$$ from the line equation into the circle equation and solve for $$x$$.
3. **Substitute:** Replace $$y$$ in the circle equation:
$$ (x+2)^2 + ((-2x + 4) - 4)^2 = 5 $$
4. **Simplify inside the second squared term:**
$$ (x+2)^2 + (-2x)^2 = 5 $$
5. **Expand the squares:**
$$ (x+2)^2 = x^2 + 4x + 4 $$
$$ (-2x)^2 = 4x^2 $$
6. **Write the equation:**
$$ x^2 + 4x + 4 + 4x^2 = 5 $$
7. **Combine like terms:**
$$ 5x^2 + 4x + 4 = 5 $$
8. **Bring all terms to one side:**
$$ 5x^2 + 4x + 4 - 5 = 0 $$
$$ 5x^2 + 4x - 1 = 0 $$
9. **Solve quadratic equation using the quadratic formula:**
$$ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} $$ where $$a=5$$, $$b=4$$, $$c=-1$$.
10. **Calculate discriminant:**
$$ \Delta = 4^2 - 4 \times 5 \times (-1) = 16 + 20 = 36 $$
11. **Calculate roots:**
$$ x = \frac{-4 \pm \sqrt{36}}{2 \times 5} = \frac{-4 \pm 6}{10} $$
12. **Find each root:**
- $$ x_1 = \frac{-4 + 6}{10} = \frac{2}{10} = 0.2 $$
- $$ x_2 = \frac{-4 - 6}{10} = \frac{-10}{10} = -1 $$
13. **Find corresponding $$y$$ values using $$y = -2x + 4$$:**
- For $$x_1 = 0.2$$:
$$ y_1 = -2(0.2) + 4 = -0.4 + 4 = 3.6 $$
- For $$x_2 = -1$$:
$$ y_2 = -2(-1) + 4 = 2 + 4 = 6 $$
14. **Final answer:** The points of intersection are $$\boxed{(0.2, 3.6)}$$ and $$\boxed{(-1, 6)}$$.
Circle Line Intersection 52D97F
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