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.
Answer:
I guess you want the y intercept form is so the answer is:
y = 
x - 4
Step-by-step explanation:
3x - 2y = 8
subtract 3x from both sides
-2y = -3x + 8
divide -2 from both sides
y = x - 4
and done
Answer:
6x²-26x+31
Step-by-step explanation:
(x²-3x+5)(2x-7)
=2x³-7x²-6x²+21x+10x-35
=2x³-13x²+31x-35
Now to differentiate:
dx=6x²-26x+31
Answer:
x > -3/2
Step-by-step explanation:
x-3x+3<6
Combine like terms
-2x+3<6
Subtract 3 from each side
-2x +3-3<6-3
-2x <3
Divide each side by -2,remembering to flip the inequality
-2x/-2 > 3/-2
x > -3/2
The rule is adding 5 if we say n is 2 then nth term is
n + 5(or so I hope )
