# Question #73eb1

##### 2 Answers

See below.

#### Explanation:

To make things easier, you need to know that:

Using this and starting with the numerator:

So our numerator is now:

Our denominator is:

So we have:

Put together:

The answer can be found by expanding and cancelling.

#### Explanation:

Some things to keep in mind are:

- an exponent means the number multiplied by itself, for example
#4^3# =#4*4*4# , - a negative exponent is the inverse of the number multiplied by itself:
#4^-3 = 1/4*1/4*1/4# - any number divided by itself is one:
#3/3=1# .

Using this we can first expand the numerator (here I am assuming the question is asking

or

Knowing that any number divided by itself = 1, this becomes

or

We can see that with the 4's, multiplying

so: