x^2+6x+6
you just multiply the x's= x^2
then the x times the 3= 3x
then 3 times x=3x again
finally, 3 times 3
then it equals... x^2+3x+3x+9
then you need to simplify it to... x^2+6x+6 by adding the to 3x's in the middle as they are addable unlike the others so they are just left.
xxx