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Mathematics 24 Online
OpenStudy (herpderp):

http://prntscr.com/cop6gn How is the answer all real numbers?

OpenStudy (lannyxx):

|2s -7| >= -1 Do you know how to work with absolute values?

OpenStudy (herpderp):

Yes

OpenStudy (lannyxx):

Easiest way I think is to just square both sides and get rid of it, but I hope someone here will come and show you rules to deal with it otherwise.

OpenStudy (mhchen):

Absolute value of anything is greater, or equal to 0. So it will NEVER be negative.

OpenStudy (herpderp):

exactly

OpenStudy (herpderp):

So isn't it supposed to be no solution?

OpenStudy (lannyxx):

so it's like saying: whatever s you put, it will ALWAYS BE GREATER THAN -1

563blackghost (563blackghost):

No its `definitely all real numbers.`

OpenStudy (lannyxx):

the whole thing is always greater that's why the solution is all real numbers cuz whatever real number you put in there won't change that fact

OpenStudy (herpderp):

yeaaaah that's the answer xD I don't know how it is though

OpenStudy (herpderp):

oh

OpenStudy (herpderp):

wait I get it; thanks

OpenStudy (lannyxx):

when it is said that all real numbers are the solution they just mean any number that is not imaginary will work

OpenStudy (herpderp):

I was being d u m b

OpenStudy (lannyxx):

you're fine

563blackghost (563blackghost):

Nicely explained @LannyXX :)

OpenStudy (lannyxx):

thank you!

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