For which value(s) of x will the rational expression below be undefined? Check all that apply

Given:
[tex]\frac{(x+3)(x+6)}{x+7}[/tex]Required:
We need to find the value of x that makes the given expression is undefined.
Explanation:
Recall that a rational expression is undefined when the denominator is equal to zero.
The denominator of the given expression is x+7.
Equate it to zero.
[tex]x+7=0[/tex]Subtract 7 from both sides of the equation.
[tex]x+7-7=0-7[/tex][tex]x=-7[/tex]Final answer:
[tex]x=-7[/tex]