Answer: Multiplying 3x and -x we obtain A= -3x^2
Answer:

Step-by-step explanation:
Setting it up as a fraction will help us see the simplification process a bit easier.

a/a = 1, so they cancel each other out, leaving us with simply

Answer:
A.336 cubic centimeter
Step-by-step explanation:
6cm×8cm×7cm=336