-6x + 12
To find this answer, follow these steps:
First, multiply 2x + 3 and x - 6 using either the FOIL method or the box method. This should get you the answer of 2x^2 - 9x - 18
This should now replace the 2x + 3 and x - 6
So with that, you should have this currently:
2x^2 - 9x - 18 - 2x^2 + 3x + 30
Now, combine like terms:
The 2x^2 cancels each other out. After that, combine -9x and 3x to get -6x. Then -18 and 30.
This should leave you with the final answer of -6x + 12
Hope this helps!