3x^2+5x-2 BEST ANSWER

quadratic equation. I need to factor by grouping

You have :
--------------------------------------…

B = 3 x*2 + 5 x - 2

B = ( 3x - 1 ) ( x + 2 ) <---------------------------------------…

Chosen from :

B = ( 3x + 1 ) ( x - 2 ) ... 3x^2 -5x - 2

B = ( 3x -1 ) ( x +2 ) ....... 3x^2 + 5x - 2 <------------------------------

B = ( 3x +2 ) ( x - 1 ) ---- 3x^2 - x - 2

B = ( 3x - 2 ) ( x +1 ) ---- 3 x^2 + x - 2

factorised: (3x+1)(x-2)
Therefore x=2 and x=0.33333 = one third

Hope this helps, wasn't sure what you meant by "grouping" but this is what I would do.

3x^2 +5x - 2 = (3x - 1)(x +2)
x = -2, 1/3
..

3x^2+5x-2

x(3x + 5) = 2

1. x = 2

2. 3x = -5

x = -5/3

it's expression
=(3x-1)(x+2)