Question

what is equal to the rational expression when

Answer 1

\[\neq 5\]

Answer 2

\[x^2-25/x-5\]

Answer 3

sorry was helping with someone in chem

Answer 4

its ok

Answer 5

im not quite sure what you're asking... is it this
\[\frac{x^2-25}{x-5}\space\space \text{while} \space\space x\ne5\]

Answer 6

yes and just to know, how do you put the fraction bar cause i can't find it.

Answer 7

\ frac { TOP } { BOTTOM }

Answer 8

so, if you plug in for x=5 it will tell you something about this rational fraction. try that

Answer 9

\[5x^2-25/5-5\]

Answer 10

sort of you got the top wrong but that doesnt matter, lol
5-5 = 0
you cant have 0 in the denominator. So, at x=5 it is undefined so where x dne 5 it is rational

Answer 11

@dannyrod2000 You're asking for the sign of the expression ?

Answer 12

rational expression when x

Answer 13

\[\neq5\]

Answer 14

I made you do that x=5 bit to help you know why it's important at that point, so when x dne 5 you can simplify this, as long as you say its not gonna be 5.

Answer 15

so, if you factor the top you will find
\[\frac{(x-5)(x+5)}{x+5}\]

Answer 16

i messed up that sign again
on the bottom

Answer 17

lol sometimes I scroll up and mess up the signs when i start typing

Answer 18

oh lol

Answer 19

\[\frac{(x+5)\cancel{x-5}}{\cancel{x-5}}\]

Answer 20

so x+5 is the answer but only while x dne 5

Answer 21

what does dne stand for? lol

Answer 22

does not equal (in this case)
it can also mean does not exist (in other cases)

Answer 23

oh does not equal?

Answer 24

oh ok lol

Answer 25

its internet shorthand from back before all this fancy equation drawing :P

Answer 26

kinda like
le for < and equal to
ge for > and equal to

Answer 27

ok i got it right!

Answer 28

:D

Answer 29

lol thanks