Find the factors of $\displaystyle (4x^2+13x-12)=0$ and use them to solve teh quadratic equation:

$\displaystyle (4x^2+13x-12)=0$

Solve the quadratic equation

$\displaystyle 2x^2+1.6x-1.3=0$

Ive been reading higher engineering mathamatics by John Bird but i still dont get it or know where to start. Help is much apreciated.

If you can break it into steps so i dont egt lost again that would help.