A zero in front of the x would make this a difference of two perfect squares. All of the other option would interfere by adding another term.
Answer:
Monomial; Standard form: 18a^2b^2
Step-by-step explanation:

Answer:
- 4 4/5 *C
Step-by-step explanation:
12:00-6:00 is 6hrs
7/10*6 = 42/10 = 4 1/5
1 - 4 1/5 = - 4 4/5