I do not know how to solve the following:

Write without using absolute value symbols |3i\2-i|. I have been working diligently on the solution, but do not want to show the work I have done so far because I have not mastered LaTex. I went to LaTex, looked up the division sign, and LaTex appeared to instruct me to type \div, but I did not get any results. Perhaps a few pointers on using LaTex, even if it is to direct me to a tutorial