You can 
put this solution on YOUR website!    
Hi,
factoring...
1)3x^2-19x+6
 (3x -1)(x - 6)
check with FOIL
F	First terms
O	Outside terms
I	Inside terms
L	Last terms
2) 2x^2+11x-4   Cannot be factored
3)5x^2-13x-6 
 (5x + 2)(x-3)
check with FOIL
F	First terms
O	Outside terms
I	Inside terms
L	Last terms