\sqrt issue

Hello
I was trying to do an animation using square roots, but when i write the code like this:
`TexMobject(r"\sqrt{",r"\left(",r"5",r"-",r"{9",r"\over",r"2}",r"\right)",r"^2}",r"=",r"\sqrt{",r"\left(",r"4",r"-",r"{9",r"\over",r"2}",r"\right)",r"^2\tiny.}")`
And then Writing (or adding) on the scene, it shows the whole equation, except the last character (the "2" exponent).

I watch a video that use a "\tiny ." to solve this, but it doesn't work to me.

I'm using Windows 10, the last version of Manim.