Question

For what values of x is the rational expression below undefined?
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Answer 1

what makes a rational expression undefined?

Answer 2

when the denominator is 0 @DebbieG

Answer 3

i think factor first the denominator iam not sure ChinaGurl

Answer 4

idk how to solve it

Answer 5

hard

Answer 6

to be equal zero oh wait

Answer 7

I figured it ot it was -5 & 5
but what about this one ?

Answer 8

Write - just set den'r=0, and solve. Those are the values that make the expression undefined. :)

Answer 9

On this one, just plug in 4 where you see x and simplify

Answer 10

\[\Large \frac{ 4-12 }{4-8 }=?\]

Answer 11

thanks! I understand

Answer 12

Awesome! :)

Answer 13

did you get the answer

Answer 14

???//

Answer 15

yes its 2

Answer 16

great job!!! :D