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Mathematics 18 Online
OpenStudy (anonymous):

........

OpenStudy (anonymous):

\[\frac{ x+a }{ ax }=\frac{ b }{ x }\]

OpenStudy (anonymous):

@Napolions

OpenStudy (anonymous):

a=2 and b=3

OpenStudy (anonymous):

what up

OpenStudy (anonymous):

can i get a picture

OpenStudy (anonymous):

ther isnt a picture its just the equation.......

OpenStudy (anonymous):

alright so which part u need elp with 1 or 2

OpenStudy (anonymous):

help

OpenStudy (anonymous):

both...

OpenStudy (anonymous):

\[\frac{ x+2 }{ 2x }=\frac{ 3 }{ x }\]

OpenStudy (anonymous):

alright so do you want to find the variable x

OpenStudy (anonymous):

is it 4?

OpenStudy (anonymous):

yes nice job

OpenStudy (anonymous):

it was 3/4

OpenStudy (anonymous):

wat was 3/4?

OpenStudy (anonymous):

the answer it was 3 over 4

OpenStudy (anonymous):

how?....... i got 4.....

OpenStudy (anonymous):

2+x =3 and 2x =4

OpenStudy (anonymous):

call my name when you need help

OpenStudy (anonymous):

wait how did u get that???

OpenStudy (anonymous):

@Napolions

OpenStudy (anonymous):

what up

OpenStudy (anonymous):

adding 1 up top and multiplying 2 at the bottem

OpenStudy (anonymous):

im confused......... so first u multiply both sides by 2x.......then it gets canceled...... leaving \[x+2=\frac{ 3 }{ x }2x\]

OpenStudy (anonymous):

which is \[x+2=6\]

OpenStudy (anonymous):

now your confusing me

OpenStudy (anonymous):

@Tazmaniadevil

OpenStudy (anonymous):

and then u subtract 2 on both sides and get 4 \[x=4\]

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

so thats the first part right?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

ok wat about the second part???

OpenStudy (anonymous):

An extraneous solution is a root of a transformed equation that is not a root of the original equation because it was excluded from the domain of the original equation.

OpenStudy (anonymous):

that is how you identify it

OpenStudy (anonymous):

@plzzhelpme

OpenStudy (anonymous):

i didnt get that @Napolions

OpenStudy (anonymous):

this website should help u Extraneous Solutions - Hotmath hotmath.com/hotmath_help/topics/extraneous-solutions.htm

OpenStudy (anonymous):

i mean this one Extraneous Solutions - Hotmath hotmath.com/hotmath_help/topics/extraneous-solutions.htm

OpenStudy (anonymous):

ya that page isnt opening...... @Napolions

OpenStudy (anonymous):

go to google and type in extraneous solutions and it is under the one that say hot math

OpenStudy (anonymous):

wait i think i did it wrong........ \[\frac{ x+2 }{ 2x } =\frac{ 3 }{ x }\] \[ 3(2x)= x(x+2)\] \[6x=2x+2x\] \[6x=4x\] @Napolions

OpenStudy (anonymous):

cross multiplication??

OpenStudy (anonymous):

think so

OpenStudy (anonymous):

im totally confused rn.........

OpenStudy (anonymous):

@Napolions

OpenStudy (anonymous):

what up

OpenStudy (anonymous):

wat do i doo???>.........

OpenStudy (anonymous):

x_x

OpenStudy (anonymous):

how does this sound??? x(x+1) = 2x x^2 + x = 2x x^2 -x = 0 x(x-1)=0 x=0 or x=1 the x=0 is extraneous, because we are not allowed to divide by 0 (which is what happens in the original equation if x is 0)

OpenStudy (anonymous):

i made a mistake in my previous problem....i did x*x is 2x butits x^2

OpenStudy (anonymous):

ok so make the x 1

OpenStudy (anonymous):

it was x+22x=3x 3(2x)=x(x+2) 6x=x^2+2x \[x^2+2x-\left(6x\right)=6x-\left(6x\right)\]

OpenStudy (anonymous):

\[x^2-4x=0\]

OpenStudy (anonymous):

are u checking to see if you are right do you need my help

OpenStudy (anonymous):

\[x=\frac{-\left(-4\right)+\sqrt{\left(-4\right)^2-4\cdot \:0\cdot \:1}}{2\cdot \:1}=4\]and \[x=\frac{-\left(-4\right)-\sqrt{\left(-4\right)^2-4\cdot \:0\cdot \:1}}{2\cdot \:1}=0\]

OpenStudy (anonymous):

can u check it once??

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

\[x=4,\:x=0\] right...? and x=0 is the extraneous

OpenStudy (anonymous):

correct

OpenStudy (anonymous):

oh ok thxxxx.......

OpenStudy (anonymous):

Medal plzzz

OpenStudy (anonymous):

u know i did most of the question ^.^

OpenStudy (anonymous):

lol but watev thx..........

OpenStudy (anonymous):

yeah but i helped though but yeah you did most

OpenStudy (anonymous):

lol

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