Originally Posted by

**dan87951** I'm having a heck of a time figuring out how they got an answer to a problem. Maybe you guys can help me out?

Find values of X, if any at which f is not continuous.

X/2x^2+x books answer is 0 and -1/2

Wouldn't I factor this denominator? I understand why its 0 and -1/2 has it makes the bottom denominator equal to 0 but how did they get to that answer? I know just plugging in 0 will prove to make the denominator 0 but how did they do the -1/2? Wouldn't they factor? Thanks

Another one i'm having problems with is

radical x-8 with index 3. Don't even know how to start this one.

THanks