Convert ((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))/(4) to MathJax?
Probably you should ask questions about how to ask on MathStack on their meta site! Each site on Stack Exchange has a Meta site to ask questions about asking questions! They even have a tutorial there: https://math.meta.stackexchange.com/questions/5020/mathjax-basic-tutorial-and-quick-reference

However, learning how to typeset mathematics is something Computer Science students and researchers have to learn how to do, so perhaps it could be considered just about on-topic!

MathJax is based on LaTeX which is a page description language used for writing documents which happens to be quite good at writing maths. LaTeX (created  by Leslie Lamport) was built upon TeX which was created by Donald Knuth. Both Computer Scientists.

The simplest way of using MathJax is to just use the dollar symbol $ to quote or surround your formula. If we take your first formula:

((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))/(4)


Put it with the dollars, we get:

$((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))/(4)$


which displays this:

$((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))/(4)$

Now perhaps you want that to be a bit neater. They you can replace the slashes by some better arrangement and make them fractions. In MathJax w can invoke layout function by using the backslash \ to indicate a layout function name and give its arguments within curly braces {}. We want the \frac function like this:

$\frac{((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))}{(4)}$


$\frac{((50^A)*((((50^B)(((50^C)+1)/(4)))+1)/(4)))}{(4)}$



We can do that again for each fraction:

$\frac{((50^A)*(((\frac{(50^B)((\frac{(50^C)+1)}{(4)}))+1)}{(4)}))}{(4)}$


$\frac{((50^A)*(((\frac{(50^B)((\frac{(50^C)+1)}{(4)}))+1)}{(4)}))}{(4)}$

Which can be tidied up further, but that gives you the basics!