Question

Determine excluded values for the denominator...

Answer 1

My book has this like "getting rid of" an x. And then it being x and x^2-4x or something. I'm finding excluded values for the denominator.

Answer 2

so you wanna find the values of \(x\) which cannot be taken?

Answer 3

yes. but only for the denominator.

Answer 4

okay well
whenever we divide the denominator cannot be taken as \(0\)
rather than \(0\) the denominator can take all values
so
\(x^3-4x \ne 0\)