This week, I have learned how to rationalize expressions (quivalent).

In the example, we have x+4 and (x-3)x(+4)

We first want to divide each sides by x+4 because they are both common.

As x+4 / x+4 is 1 the top is 1 and there is x-3 left.

Let’s try something harder

Now we have a harder example.

First we want to take out commons. and 2x, x+4.

When we cross out all of them, the answer should look like 2x/(x+2)