¿Cómo escribir y animar ECUACIONES en Manim?

Cómo incluir y animar ecuaciones en $\mathbb{M}$anim.

from manim import *

class leccion12(Scene):
    def construct(self):
        eqn0 = MathTex("2x^2+6x+7=0").move_to(UP * 3)
        eqn1 = MathTex("x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}").move_to(UP * 1.5)
        eqn2 = MathTex(r"x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}")
        eqn3 = MathTex(r"\left(\begin{array}{cc} 1 & 2 \ 3 & 4 \end{array}\right)").move_to(DOWN * 2)
        self.play(Write(eqn0))
        self.wait(3)
        self.play(Write(eqn1))
        self.wait(3)
        self.play(Write(eqn2))
        self.wait(3)
        self.play(Write(eqn3))
        self.wait(3)

class leccion13(Scene):
    def construct(self):
        eqn0 = MathTex("2x^2+6x+7=0").move_to(UP).scale(1.5)
        eqn1 = MathTex("2x^2","+6x","+7","=0").move_to(UP).scale(1.5).move_to(DOWN)
        self.play(Write(eqn0))
        self.wait(3)
        self.play(Write(eqn1[0]))
        self.wait(1)
        self.play(Write(eqn1[1]))
        self.wait(1)
        self.play(Write(eqn1[2]))
        self.wait(1)
        self.play(Write(eqn1[3]))
        self.wait(1)

class leccion14(Scene):
    def construct(self):
        color1 = "#0F2C67"
        color2 = "#CD1818"
        color3 = "#F3950D"
        color4 = "#F4E185"
        eqn0 = MathTex("2x^2+6x+7=0").move_to(UP).scale(1.5)
        eqn1 = MathTex("{-b\pm \sqrt{b^2-4ac}}","\over","{2a}",color=color4).move_to(DOWN).scale(1.5)
        eqn1[1].set_color(color3)
        eqn1[2].set_color(color2)
        self.play(Write(eqn0))
        self.wait(3)
        self.play(Write(eqn1))
        self.wait(3)

class leccion15(Scene):
    def construct(self):
        color1 = "#0F2C67"
        color2 = "#CD1818"
        color3 = "#F3950D"
        color4 = "#F4E185"
        self.camera.background_color = color1
        eqn0 = MathTex("x=", "2.5").move_to(UP * 2 + LEFT * 2).scale(1.5)
        eqn1 = MathTex("y=", "1.5").move_to(UP * 2 + RIGHT * 2).scale(1.5)
        eqn0.set_color(color3)
        eqn1.set_color(color2)
        eqn2 = MathTex("z=(", "2.5", ")^2+(", "1.5", ")^2", color=color4).move_to(DOWN).scale(1.5)
        self.play(Write(eqn0))
        self.wait(1)
        self.play(Write(eqn1))
        self.wait(3)
        self.play(Write(eqn2[0]), Write(eqn2[2]), Write(eqn2[4]))
        self.wait(3)
        self.play(Transform(eqn0[1],eqn2[1]),Transform(eqn1[1],eqn2[3]))
        self.wait(3)


class leccion16(Scene):
    def construct(self):
        eqn0=MathTex("2x^2+6x+7=0").move_to(UP * 3)
        eqn1=MathTex("x=\frac{ -b \pm \sqrt{b^2-4ac}}{2a}")
        eqn2=MathTex(r"x=\frac{ -b \pm \sqrt{b^2-4ac}}{2a}")
        eqn3=MathTex(r"\left(\begin{array}{cc} 1 & 2\ 3 & 4\end{array}\right)").move_to(DOWN * 2)
        self.play(Write(eqn0))
        self.wait(3)
        self.play(Write(eqn1))
        self.wait(3)
        self.play(Write(eqn2))
        self.wait(3)
        self.play(Write(eqn3))
        self.wait(3)