Question

how do you solve for x , using rational expressions, to find values that are undefined ?

Answer 1

you look at the denominator..

Answer 2

for example you have \[\frac{x+1}{x+2}\]
look at the denominator
the denominator is x + 2

equate this to 0 then solve for x

x + 2 = 0
x = -2

there fore when x = -2 the expression is undefined

Answer 3

ok thank you ,but what if you have some thing like : 3x+4 over 2xto the 3rd power - 24x-60?

Answer 4

then you have to factor it out then solve for x

Answer 5

how do I do that ?