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