Here you can use the rules for multiplying and dividing powers. Remember these rules:
It is useful to separate the numbers and the indices, and then multiply the by and add the powers of :
A similar method is used when dividing:
Another way to write a division is to write it in the form of a fraction. The numbers and the indices can then be separated, before dividing the by and subtracting the powers of :
Did you get ?
Remember to write the division in the form of a fraction to start.
Remember you should first work out , then subtract the powers of (because it is division), like this: