Answer:
12q⁹s⁸
Explanation:
In mathematics, the brackets () means that you have to multiply, and this is an algebraic expression, so:
- Multiply like terms
- Your answer must be in alphabetical order

The reason we do this I in mathematics, when me multiply expression with exponents, add the exponents together
Eg:

So we continue:

Therefore, we add them and it becomes

Hope this helps