What are ALL of the restrictions on the variable for the expression?

Question

((x^2+11x+30)/(x^2+5x+6))*((x^2+7x+12)/(x^2+8x+16))

Answer 1

the restrictions are those x values where the demonstrator equals 0 d as once you cannot divide by zero

so for the first equation the function is undefined where

x^2+5x+6=0 factor this to

(x+3)((x+2)= 0

x= -3 and -2 which are the restrictions on the domain

I will leave the second one to you. find the values of x which make the denominator zero