I dont understand this one bit, please someone explain this to me. Find all numbers for which the rational expression is not defined. -3 over 2x

Question

anonymous · Answer

a rational expression that is not defined is when you divide something by 0 (that's when you get an error on your calculator too). What value does x need to be for -3/(2x) to be -3/0?

anonymous · Answer

X is zero?

anonymous · Answer

exactly! That's simply it

anonymous · Answer

still a little fuzzy on whats going on here, how about 5over x-8, do i just plus 8 to make the demominator zero?

anonymous · Answer

yep, you got it. If you had 10/(2x-4), what would it be?

anonymous · Answer

x=2

anonymous · Answer

perfect, I've got nothing more to teach you on the subject it seems! ;-)

jhonyy9 · Answer

- so before all you need to know that one fraction whene is undefined ?

- answer : when the denominator = zero

- so in this case if there is -3/2x so from this resulted that when x=0 so than the denominator = zero so than this fraction will be undefined

anonymous · Answer

that you that helps