SOLUTION: thank you in advance for helping me with this problem!!! f(x)=x^2+x I factored out the x to get: x(x+1)and then got x can not equal 0 or -1 for the domain. Am I on the right tra

Question 156145This question is from textbook college algebra
: thank you in advance for helping me with this problem!!!
f(x)=x^2+x
I factored out the x to get: x(x+1)and then got x can not equal 0 or -1 for the domain. Am I on the right track? Thank you. This question is from textbook college algebra

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Are you trying to find the domain of ??

If you are, then notice how there is no division by a variable or a square root of a variable. This means that we don't have to worry about division by zero or taking the square root of a negative number. So this means that we can plug in any number into and it will result in a real number.

So the domain is all real numbers.

The domain in set-builder notation is

Also the domain in interval notation is (

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