Answer:
p>3
Step-by-step explanation:
<=> 3p - 9 - 5p > -3p - 6
<=> -2p + 3p > -6 + 9
<=> p > 3
Multiply the numerator and denominator by the conjugate of the denominator:

Simplify:

Answer:
1440 different arrangements are possible.
Step-by-step explanation:
Number of arrangements of n elements:
The number of arrangements of n elements is given by:

In this question:
6 couples, in which each can be positioned in 2 ways(him/her or her/him). So

1440 different arrangements are possible.
Answer: <em>c) 4a² - ab</em>
Step-by-step explanation:
<em>A = (2a)² - ab = 4a² - ab</em>