Question 211168
Domain specifies the values of 'x' can take.
In this case, you just want to make sure the denominator does NOT equal zero.
.
0 = (x^2+5x+6)
0 = (x+2)(x+3)
x = {-2,-3}
.
Therefore, the domain is
all real numbers except -2 and -3.
.
Or, you can write as:
(-oo, -3) U (-2, -3) U (-3, +oo)
where oo is the infinity symbol