Answer:
Step-by-step explanation:
(f + g)(x) simply means that you are adding together the 2 functions that are written in terms of x.

The only like terms we have there are the x-cubed's, so

Answer:
324 inches
Step-by-step explanation:
18 x 18 or 18² is 324
Answer: 9 over 12 is = 15 over x
Step-by-step explanation:
-4/10+5/10
=5/10-4/10
=1/10