SOLUTION: Hello, I don't quite understand the whole quadratic formula stuff. My equation is 4n^2-10n-104=0... I got the next step done. Which is X=-(-10)+- /10^2+4x4x(-104)

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Hello, I don't quite understand the whole quadratic formula stuff. My equation is 4n^2-10n-104=0... I got the next step done. Which is X=-(-10)+- /10^2+4x4x(-104)       Log On


   

Question 910423: Hello, I don't quite understand the whole quadratic formula stuff.
My equation is 4n^2-10n-104=0... I got the next step done.
Which is X=-(-10)+- /10^2+4x4x(-104)
----------------
2x4
Now im not sure what i do next. any help is great.
Found 2 solutions by Fombitz, ewatrrr:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You've got a mistake.
n+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
In this case,
a=4
b=-10
c=-104
.
.
.
n+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
n+=+%28-%28-10%29+%2B-+sqrt%28+%28-10%29%5E2-4%2A4%2A%28-104%29+%29%29%2F%282%2A4%29+
n+=+%2810+%2B-+sqrt%28+100%2B1664+%29%29%2F%288%29+
n+=+%2810+%2B-+sqrt%28+1764+%29%29%2F%288%29+
n+=+%2810+%2B-+42%29%2F%288%29+
n+=+%2810+%2B+42%29%2F%288%29+ and n+=+%2810+-+42%29%2F%288%29+
n+=+%2852%29%2F%288%29+ and n+=+%28-32%29%2F%288%29+
n+=+13%2F2+ and n+=+-4+

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
4n^2-10n-104=0
n+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
n+=+%2810+%2B-+sqrt%28+100+-+4%2A4%2A%28-104%29%29+%29%29%2F%288%29+
n+=+%2810+%2B-+sqrt%28+1764%29+%29%29%2F%288%29+
n = 10/8 ± 42/8
n = -32/8 = -4
n = 52/8 = 6.5