3x^2-5x-1=0 algebra 2 please help
2007-04-11 01:50:40 · 5 answers · asked by acousticplaya90 1 in Science & Mathematics ➔ Mathematics
Quadratic Formula
x = - b ± √b² - 4ac / 2a
3x² - 5x - 1 = 0
let
a = 3
b = - 5
c = - 1
x = - (- 5) ± √(- 5)² - 4(3)(- 1) / 2(3)
x = 5 ± √25 - ( - 12) / 6
x = 5 ± √25 + 12 / 6
x = 5 ± √37 / 6
x = 5 ± 6.08276253 / 6
- - - - - - - - - -
Roots
Solving for +
x = 5 + 6.08276253 / 6
x = 11.08276253 / 6
x = 1.847127088
- - - - - - -
Roots
Solving for -
x = 5 - 6.08276253 / 6
x = - 1.08276253 / 6
x = - 0.180460422
- - - - - - - - - -s-
2007-04-11 02:44:44 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
garypopkin is right....use the quadratic formula with
a = 3
b = -5
c = -1
2007-04-11 08:58:16 · answer #2 · answered by tryzub91 3 · 0⤊ 0⤋
x= (5+/- sq.root of 37)/6
2007-04-11 09:01:26 · answer #3 · answered by Lolplayer123 2 · 0⤊ 0⤋
using the quadratic formula,
x=1.84712708838304
OR
-0.18046042171637
2007-04-11 09:03:28 · answer #4 · answered by math freak 3 · 0⤊ 0⤋
Can't be factored. You're on your own.
2007-04-11 08:55:38 · answer #5 · answered by ? 6 · 0⤊ 0⤋