Problem : 
Factor 4x2 + 12x + 5.
(2x + 5)(2x + 1)
 
Problem : 
Factor 18x2 - 39x + 20.
(3x - 4)(6x - 5)
 
Problem : 
Factor 6x2 - 19x - 7.
(2x - 7)(3x + 1)
 
Problem : 
Factor 10x2 + x - 2.
(5x - 2)(2x + 1)
 
Problem : 
Factor 6x2 - 16x + 10.
2(x - 1)(3x - 5)
 
Problem : 
Factor 18x3 +3x2 - 6x.
3x(2x - 1)(3x + 2)