Question

3x2 +5x = 6

Can someone please solve this problem and show all the work? Please use factoring or the quadratic formula.

I am having a hard time getting the correct answer so i need to compare my work with someone else's

Answer 1

3x² + 5x - 6 = 0
3x² + 6x - x - 6 = 0
solve further to get the factors/roots

Answer 2

if u need more help, pls inform...

Answer 3

3x² + 5x - 6 = 0
3x² + 6x - x - 6 = 0
solve further to get the factors/roots

Answer 4

-5 +- root(72) all over 6 will give aprox...

Answer 5

if I didn't make a mistake.. a = 3 , b = 5 , c = -6

Answer 6

use the quadratic eq.

Answer 7

3x² + 5x - 6 = 0
3x² + 6x - x - 6 = 0
3x(x + 2) -1(x + 6) = 0
(3x - 1)(x + 2) = 0
if 3x -1 = 0, the x = 1/3
if x + 2 = 0, then x = -2

so the two roots are 1/3 and -2

Answer 8

Wait...what happend to the x+6 ?

Answer 9

Sorry, made a big boo-boo.....

Answer 10

Correct solution is...

3x² + 5x - 6 = 0

here a = 3 , b = 5 and c = -6

- b +/- root(b² - 4ac) - 5 +/- root(25 - 4*3*(-6)
x = -------------------- = ------------------------
2a 2*3

-5 +/- root(25 + 72) -5 +/- root(97)
x = -------------------- = -----------------
6 6