Question

Discuss and identify any possible restrictions that exist with (or in) the resulting rational expression.

Answer 1

\[\frac{ 2x }{ x+4 }-\frac{ x }{ x-4 }\]

Answer 2

@abdela25

Answer 3

@bookworm00981 @Preetha @tester97

Answer 4

@whpalmer4

Answer 5

Okay, let's just say that mass tagging is not helpful, so cool it. If you want a reply, wait instead of spamming our notifications.

Answer 6

@Nateyboo @GeekyChick @nrg100 @orion92898 @KingKhan94 @shamil98 @pinkmommy @SeaTurtle113 sorry i was trying to get people that could help i was not sure if what the answer would be

Answer 7

oh ok

Answer 8

ahh i see my notifcation r gonna blow up...yipee

Answer 9

well we see that if x = 4 or -4 in the denominator, then that causes the answer to be undefined. so x is restricted by 4 and -4. Because you can't divide by 0

Answer 10

oh ok thanks for explaining

Answer 11

but do you think you could help me solve it @ilovemathbutneedhelp

Answer 12

So first we have to find a common denominator.

Answer 13

ok and that would be 4 right

Answer 14

the common denominator for the problem would be
(x+4)(x-4)
so we are able to combine the numerators

Answer 15

so it would be \[\frac{ 2 }{ (x+4)(x-4)}\]

Answer 16

okay this is a tricky problem, so i will show you step by step here:
http://www.twiddla.com/1503747

Answer 17

X can not = 4, or a -4 do you see why?

Answer 18

When addition is completed you will have a resulting fraction where the degree of the numerator and the degree of the denominator are equal (both second degree) and since both the coefficients are the asymptote is a horizontal line y=1

Answer 19

yes i see why now i have another problem and i ghad tagged you in it so could you help me there

Answer 20

Lets see, I am not good in many areas of math. show me.

Answer 21

Oh yes,that problem was not an equation to be solved, but just an expression that some characteristics they wanted.

Answer 22

Where is the problem

Answer 23

i had tagged you i will do it again