Help Needed with Algebra

Use similar application from these examples, for
q1, consider this $x^n \times x^m=x^{m+n}$ note that the only different part about this on the first part is that you need to also multiply the coefficients of each part together 9 and 2, and add a slightly more complicated power together.

q2, a very similar idea to the first here, note that $x=x^{1}$ use the above rule to solve this problem by multiplying each part of the bracket by the outside.

q3, another rule here, $(x^{m})^n=x^{mn}$, this is a very fast solve tbh

Thanks for your help is there any chance you could give me answers too each question too help me revise them.

Thanks for your help is there any chance you could give me answers too each question too help me revise them.

Okay, although it isn't the standard policy I've put the answers in the Spoiler

If you tell us what answers you get, we can tell you if they are correct, and if necessary help you get to the correct answer.

Okay, although it isn't the standard policy I've put the answers in the Spoiler

so with positive indices would the answers be :

1. 18/a^4/7

2. 3/x^2 - 12/x^1

3. 9/x^4

how do work out the 1/3x bit?

how do work out the 1/3x bit?