4n² - 16n - 84 = 0
Multiply both sides by 1/4 :
n² - 4n - 21 = 0
Add 21 to both sides:
n² - 4n = 21
Complete the square by adding 4 to both sides:
n² - 4n + 4 = 25
(n - 2)² = 25
Solve for n :
n - 2 = ± √25
n - 2 = ± 5
n = 2 ± 5
Then n = 2 + 5 = 7 or n = 2 - 5 = -3.
6v-5/8=7/8
6v=12/8
v=12/8÷6
v=.25
I think it is a I am not sure though
Answer:
3
Step-by-step explanation:
The Series,The Games,and the amount of games to play
If you are trying to get y by itself I shown my work.