## Imaginary Numbers i

**What is
?**

In other words what number multiplied by itself gives us **9**. We
would say the answer is **3 **but as - multiplied by - means + .

So **-3 * -3 =9** also. Therefore the answer is -3, +3.

Work out the ones below and then move your mouse over them for an answer

**Now what about
?**

It is not a perfect square like before but we can break it up into the square root of the factors of 32

this can be further broken down into . This is

Try the following ones

**Finally what about
**

We can break this down into because