In this lesson we expand brackets involving Surds using the distributive law.
In this video we talk about how to divide surds (or simplify fractions involving surds). We also do problems mixed with division and multiplication.
In this lesson we talk about how to multiply surds in more detail (involving algebra). We also talk about how when you square root a number the answer can be both positive and negative. Finally you get to do a problem solving question (yay).
In this video we talk more in detail about the addition and subtraction of surds. In particular we do examples where we have to simplify the surds first before we can add or subtract. We also finish off with examples where we factorise the final answer.
In this tutorial we talk about how to simplify surds in more detail.
In this introduction to Surds video you learn about what Surds are and how to simplify them.
In this lesson we teach you how to use normal distribution to approximate a binomial distribution and then how to apply continuity correction.
In this lesson I show you how to do normal distribution questions with two types of graphics calculators – TI84+ and TI84+ Silver edition, but the concept should be similar with any graphics calculator.
In this lesson we talk about how to use a table to find the probability that a randomly chosen score in the population will be between two values.
In this lesson we focus on how to calculate z scores using a formula.