differential equation help for old time learner please !!!

hi i have been out of education for quite a while now and im trying to get back into the swing of maths and such since im starting a engineering degree in september and havent been doing much maths since my national certificate years ago now .. im strugling with findind the particular solutions for differential equation. could some one please talk me through this question and the stages i would take to come to the final answer thankyou Bill .

4 d^2 y/ dx^2 + 12 dy/dx +9y = 0 given y=2 and dy/dx=1 at x=0

much apriciated if some maths wiz could help me out :) thanks