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anonymous

  • 4 years ago

|3/7x-1/8|=-2

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  1. anonymous
    • 4 years ago
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    |dw:1328466052564:dw|

  2. anonymous
    • 4 years ago
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    You'll always have two answers, one where you put a negative sign in front of whatever was inside the abs. value and one where you leave it as it was

  3. anonymous
    • 4 years ago
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    |dw:1328466152526:dw| this is the solution to that first branch where there's a negative sign in front of everything

  4. anonymous
    • 4 years ago
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    |dw:1328466299763:dw| this is the solution to the 2nd equation, where you leave whatever was inside the absolute value by itself

  5. anonymous
    • 4 years ago
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    I figured out the answer is no solution for some reason.

  6. anonymous
    • 4 years ago
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    Is that the answer in the back of the book? Because I'm pretty sure there IS an answer.

  7. anonymous
    • 4 years ago
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    Okay, I see. The steps are all right, I just forgot to plug the answers back into the original equations to see whether they worked. My bad.

  8. anonymous
    • 4 years ago
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    Yeah, if you plug in my answers into the original equation they don't work. So the answers I got don't work when you plug them back in. I believe the term is called 'extraneous solutions': solutions that exist when you solve the equation, but aren't actually the answer to the original problem.

  9. anonymous
    • 4 years ago
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    hold the phone!!

  10. anonymous
    • 4 years ago
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    you have an absolute value on the left, and a negative number on the right. stop right there because the abosolute value is never negative

  11. anonymous
    • 4 years ago
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    Bollocks. How'd I miss that. I just did extra work to realize that you could never get an answer. Poop.

  12. anonymous
    • 4 years ago
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    I suppose I did prove that statement, though. Heh.

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spraguer (Moderator)
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