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Mathematics 7 Online
OpenStudy (anonymous):

@ParthKohli

OpenStudy (anonymous):

I am getting only two correct answers ,wait I will post

OpenStudy (anonymous):

\[\huge \left| x^2-2x-8 \right|+\left| x^2+x+8 \right|=3\left| x+2 \right|\]

OpenStudy (anonymous):

So I cancelled mod(x-2) and I get \[\huge \left| x-4 \right|+\left| x-1 \right|=3\]

Parth (parthkohli):

Sorry, I'm back.

OpenStudy (anonymous):

By solving this , I get answers as 1 and 4 but I don't get -2 which is also the answer

Parth (parthkohli):

That's obviously because you cancelled \(|x+2|\) :P

OpenStudy (anonymous):

yeah , I know but you can't do without that

Parth (parthkohli):

I would instead take that common and then continue.

OpenStudy (anonymous):

\[ \Large \left| x+2 \right|(\left| x-4 \right|\left| x-1 \right|)=3\left| x+2 \right|\]

Parth (parthkohli):

Yeah, now take all of it on one side.

OpenStudy (anonymous):

\[\Large \left| x+2 \right|(\left| x-4 \right|+x-1)-3\left| x+2 \right|=0\]

Parth (parthkohli):

Now take |x+2| common.

OpenStudy (anonymous):

oh I got it

Parth (parthkohli):

And you should put a mod on |x-1| btw.

OpenStudy (anonymous):

this equation tool sometimes is a pain , yeah

Parth (parthkohli):

lol

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