Quadratic factorisation: 10x^2+19x+6 6x^2+11x+4

The trick to quadratic facotrization is to first check to see if there is a coefficient in front of x^2 that isn't 1. If that is the case you will need to consider two numbers that add to give you the cofficient in front of x and two numbers that multiply to give you a quantity equal to the coefficient in front of x^2 times the number without a variable x. In other words:

n+m = b
n*m = a*c