2007-12-10 09:13:56 · 6 answers · asked by calvin l 1 in Science & Mathematics ➔ Mathematics
x = [ - 6 ±√(36 + 60) ] / 6
x = [ - 6 ±√(96) ] / 6
x = [ - 6 ± 4√(6) ] / 6
2007-12-10 09:25:32 · answer #1 · answered by Como 7 · 2⤊ 0⤋
if you've got the right software (Maple), just type:
solve(3*x^2+6*x-5=0,x);
then press enter and view the results immediately:
-1+(2/3)*sqrt(6), -1-(2/3)*sqrt(6)
you could use the quadratic equation, or use the method of completing the square (which is how the quadratic equation is derived, so I guess "complete the square" is the best answer for HOW to solve -- consult any elementary algebra book for more details, or google).
2007-12-10 17:19:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
3x^2+6x-5 = 0
Use quadratic formula,
x = [-6 ± â(6^2+60)]/6 = -1 ± 2â6 / 3
2007-12-10 17:17:27 · answer #3 · answered by sahsjing 7 · 2⤊ 0⤋
3x^2+6x-5 =
x = -1 ± â66 / 6
2007-12-10 17:21:58 · answer #4 · answered by Jared K. 2 · 0⤊ 2⤋
I think it would be...
3xsquared + 6x- 0
9x + 6x - 5 = 0
15x - 5 = 0
+5 +5
15x = 5
-------------
15 15
x = 1/3
But I suck at math so I dunno. That's how we were taught.
2007-12-10 17:19:42 · answer #5 · answered by Schrei 3 · 1⤊ 1⤋
use the quadratic equation
2007-12-10 17:16:46 · answer #6 · answered by David L 2 · 0⤊ 1⤋