how you do that line s**t that goes under the v thing but side ways

You mean  this   ≤   or   this    ≥   ???

Go to "insert" above.....then "Special Character"......you will see all the symbols...just click on any one to insert it into a question.......

Hah Lol

Do you mean Square root?

To do it on the calculator type

sqrt(?)

?: Any number

$${\sqrt{{\mathtt{25}}}} = {\mathtt{5}}$$