First, let's review what the "factorial operator" ! means.
5! = 5*4*3*2*1.
3! = 3*2*1
7! = 7*6*5*4*3*2*1
Then:
7! 7*6*5*4*3*2*1 7*6*5*4 5040
----- = ----------------------- = ------------- = ----------- = 5040 (answer)
3! 3*2*1 1 1
Answer:
c
Step-by-step explanation:
As the given equation is a quadratic equation, the domain is all real numbers. There is actually no limitation to a quadratic equation, because these equations can spread and are indefinitely continuous. Therefore, it makes no sense to have a limiter by a limited domain set.
Point D is obviously on both lines.
Answer:
I can not see the whole picture, otherwise I could maybe help you.