Answer:
a2+2a−8
Step-by-step explanation:
Expand (a+4)(a−2)(a+4)(a-2) using the FOIL Method.
a⋅a+a⋅−2+4a+4⋅−2
1.
Consider a group of n objects. Assume we want to form groups of r, from these n objects.
There are in total

many ways of doing so.
where, r! is "r factorial", calculated as 1*2*3*...*(r-1)*r
2.
C(x, 2) is the total number of pairs out of x objects, that we can form.
so let the x objects represent the x teams, and 2, represent a group of 2, which means a game.
The total number of games is:
n(x)=2*C(x, 2) =

Remark, we multiplied by 2, since there will be 2 matches for each pair of teams.
Answer:
Answer:
The correct answer is 288.
Step-by-step explanation:
A person has to order a new car.
He has a choice of 9 colors.
Other parameters include air conditioning, heated seats, anti-lock brakes, power windows, CD player.
Each of these parameters he have two options each.
Therefore the number of different ways can a new car be ordered in terms of these options is given by 9× 2 × 2 × 2 × 2 × 2 = 288.
The person have 288 ways of choosing which kind of car is he going to order for himself.
Answer:
-45/2
Step-by-step explanation:
Step by step in the screenshots!!
Answer:
idk sorry m8
Step-by-step explanation: