It looks like you want to simplify this expression, right?

Before we answer the question, we just want to make sure we understand what you have written (3x^2 + 12x -15/ x^2 2x - 15 / 3x^2 - 3x/ 3x-x^2). We noticed that there is a space between the first 2 and the second 2. This can be interpreted in several ways (e.g. 2 times 2x, or 22x), so we just want to make sure that we understand the question correctly.

Option 1:

Option 2:  

Option 3:

Option 4:

If none of the four options listed above is correct, please rewrite the expression using parentheses so that there is no ambiguity.