Thank You, Nasser. I poorly phrased my question. At this stage, my most basic, least ambitious question is: How can one import the following example LaTeX article into a Mathematic Slide Show, and therefore make it look truly professional & beautiful?
\documentclass[11 pt] {article}
\begin {document}This is an example LaTeX document. Suppose we are given a rectangle with sidelengths $ (x + 1) $ and $ (x + 3) $. Then the equation $A = x^2 + 4 x + 3 $ represents the rectangle area. Suppose we are given a rectangle with sidelengths $ (x + 1) $ and $ (x + 3) $. Then the equation $$A = x^2 + 4 x + 3 $$ represents the rectangle area. \end {document}