**Indices** provides us with a nice quick way of doing calculations

So instead of doing (y x y x y x y) x (y x y x y), we can do y^{4} x y^{3}.

We need to carefully memorise the **indices** **rules** for:

y^{a} x y^{b} and y^{a} ÷ y^{b} and (y^{a})^{b} and y^{-a}

(although we memorise these, they are logical and we could work them out ourselves if we forgot them).

Let’s try some examples with the teacher:

Let’s try using these rules in the following questions (exercise 2B on pages 22 and 23 of the textbook:

Here are the answers to the questions above.

Use those that you got wrong as a learning guide of the things you need to focus on or possibly restudy: