For the third week of Precalc 11, we started our new unit “Radical Operation and Equations”.
We learned how to write an entire radical to a mixed radical and how to write a mixed radical to an entire radical.
And we also learned how to add or subtract radicals. Like terms are radicals with the same index and radicand, these are the only radicals that can be + or- . When there is a variable in the radicand, you must specify what type of number (positive or negative) is needed to make the radical defined, for √ , the radicand must be a positive number.