3 x^{2} - 15x - 42
(x-7)(x+2)
x-7=0 x+2=0
x=7,-2
Answer:
Step-by-step explanation:
I must assume that you meant 10(N + 3). Let's not mix { with ).
10(N + 3) is as simple as this expression gets. You could, however, re-write it as 10N + 30.
The total number of wrestlers are 6 and each have to wrestle each other wrestler only once.
It means, the first wrestler have 5 opponent, second have 4 opponents , third have three oponenets , fourth have two opponents and the fifth have only one opponent.
So the total number of matches = 5+4+3+2+1 =15
I assume you're referring to a function,

where <em>a</em> is some unknown constant. By definition of the derivative,

Then
