Answer:
8x
Step-by-step explanation:
Because you are adding the (x+3) there you can immediately you the association property to simplify
(2x + 5x + x) + (3 - 3)
8x + 0 =
8x
About 94.24778. The radius is 3.
Answer:

Step-by-step explanation:
Given

Required
Simplify
In indices, we have:

So:


Answer:
both elements will be negative in rot.180°