Week4-Precalc11

This week we learned Chapter2, multiplication, and division of radicals and solving the radical equation. I have to remember that restriction goes first, and remember to check after solving an equation. I always forget the restriction in the simplify part. For example, there’s a radical like that:\sqrt{18x}, the restriction of x should be x>/=0 if you ignore this step, the whole radical would be wrong. Because there shouldn’t be any negative numbers under roots. So the answer of it should be 3\sqrt{2x} (x>/=0). Also, I always make mistakes on calculating. I should pay more attention to calculating the right answer and that needs practice.
Practice makes perfect!
Also, I learned some new math language. Such as binomial` conjugate` denominator` numerator`restriction` extraneous and so on.
This week I learned a lot!
River