Rules of posting

Dear longhaul123,

I'm happy to respond.

GMAT Club uses La Tex, a general system for writing math symbols. You can find some of the syntax at this site, which actually tells you far more than you need.

Many of the basics are built-in buttons. Every other La Tex symbol or built-in symbol has to be contained in the math buttons (the "m" button).

Here are some basics. Ordinary math:
\(2 + 5 = 7\)
\(6 - 3 = 3\)

If we want to get fancy, we can use the multiplication & division signs.
\(7 \times 8 = 56\)
\(91 \div 7 = 13\)
There is no expectation that you will be this fancy.

Use the carot ^ (shift-6) for exponents.
\(2^8 = 256\)
For multiple digit exponent, surround the exponent in curly brackets {}
\(2^{10} = 1024\)

For fractions, type the fraction with a single slash sign, then highlight everything and press the "fraction" button, then highlight all this and press the math button.
\(\frac{a}{b}\)

Similarly for square roots. Highlight the expression, hit the "square root" button, then highlight it all and hit the math button.
\(\sqrt{361} = 19\)

Does all this make sense?
Mike