This week in class we learn how to make a number into an absolute value. In short, it is finding how far away from 0 a number is on a number line. when you are asked to find an entire radical you will see a number with two lines on either side of the number.
Eg. l-45l = 45
Eg. l32l = 32
If there is a minus symbol on the outside it means the radical will be negative.
Eg. -l-28l = -28