Solve the equation.?

0 ⤊

3x^2+14x-40=0

use a comma to seperate answers as needed

2007-04-26 02:53:32 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3x^2 - 6x + 20x - 40 = 0
3x(x - 2) + 20(x - 2) = 0
(x-2)(3x+20) = 0

x = 2
x = -20/3

2007-04-26 03:00:24 · answer #1 · answered by gudspeling 7 · 0⤊ 0⤋

(3x + 20) (x- 2) = 0

Thus, x = -20/3 , x = 2

2007-04-26 10:01:45 · answer #2 · answered by gwennie 3 · 0⤊ 0⤋

use ( half ) quadratic formula
a=3
b=14
c=-40

x1=2

x2=-20/3

2007-04-26 09:59:14 · answer #3 · answered by iyiogrenci 6 · 0⤊ 0⤋