CALCULUS HELP NEEDED PLEASE?

I'm guessing that the first problem is (x^2+5x+6)/(x+2) then it is factorable and simploifies to ((x+3)(x+2))/(x+2) which simplifies to y=x+3 which is a line you should be able to graph and figure out the domain and range. (both all reals) except you have to go back to the original equaition and look to see when you are diving by zero ( or taking an even root of a negative number) and obviously -2 will not work in the original equaition so the domain is all reals not including x=-2. Us eyou math skills to graph the other problems to figure out the d and range