manim_skill

```python
from manim import *

class QuadraticRoots(Scene):
    def construct(self):
        # Set up axes and parabola
        axes = Axes(
            x_range=[-5, 5, 1],
            y_range=[-1, 10, 1],
            axis_config={"color": BLUE},
        )
        parabola = axes.plot(lambda x: x**2 - 4, color=GREEN)
        parabola_label = axes.get_graph_label(parabola, label="x² - 4")

        # Highlight roots
        roots = axes.x_axis.get_roots(parabola)
        root_dots = VGroup(*[
            Dot(axes.c2p(root, 0), color=RED) for root in roots
        ])
        root_labels = VGroup(*[
            MathTex(f"x={root:.1f}").next_to(dot, DOWN)
            for root, dot in zip(roots, root_dots)
        ])

        # Animation sequence
        self.play(Create(axes), Write(parabola_label))
        self.wait(0.5)
        self.play(Create(parabola))
        self.wait(1)
        self.play(LaggedStart(
            Create(root_dots),
            Write(root_labels),
            lag_ratio=0.5,
            run_time=2
        ))
        self.wait(2)
        self.play(FadeOut(root_labels), FadeOut(root_dots))

# To render: manim -pql quadratic_roots.py QuadraticRoots
```

This script creates a 3Blue1Brown-style animation showing the roots of the quadratic equation x² - 4 = 0. The parabola is plotted on labeled axes, with red dots marking the roots at x = -2 and x = 2. The animation follows a logical sequence: first drawing the axes and label, then the parabola, and finally highlighting the roots with their coordinates. The final output is a high-quality MP4 file showing the entire process with smooth transitions. The code is optimized for clarity and follows Manim's modern API conventions.