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hba

  • 2 years ago

If x^2-36>0,what are the possible values of x ?

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  1. hba
    • 2 years ago
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    x^2>36 \[x \ge \pm6\]

  2. hba
    • 2 years ago
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    Options provided, A) x > 6 B) x < 6 C) x > -6 D) x <-6 or x >6

  3. hba
    • 2 years ago
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    @Rosh007 Yes ?

  4. hba
    • 2 years ago
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    @Rosh007 Please help !

  5. hba
    • 2 years ago
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    So x > +- 6

  6. Otonashi
    • 2 years ago
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    D

  7. hba
    • 2 years ago
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    Please check out the CoC-http://openstudy.com/code-of-conduct @Otonashi

  8. Rosh007
    • 2 years ago
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    mmmm... I am not sure about how it comes.. since it is inequality... have to refresh.. my memory...

  9. hba
    • 2 years ago
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    @nubeer Please help !

  10. tamtoan
    • 2 years ago
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    if you want to solve, try factor the x^2 - 36 ...and what condition make the product of 2 factors greater than zero ?...try that, you should come out with the right answer

  11. hba
    • 2 years ago
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    not helpful ^^

  12. tamtoan
    • 2 years ago
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    solving for you is not the right way to help you understand at all :)

  13. Rosh007
    • 2 years ago
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    but a method is there.... not by mathematical.. but by anaysis... you will b able to understand

  14. nubeer
    • 2 years ago
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    hmm honestly.. i dont remmeber how but option is D. u can say its trick the way i rmemeber when x<+-a then sol is -a<x<a when x>+-a then sol is x<-a and x>a

  15. hba
    • 2 years ago
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    @tamtoan I dont need the answer,i dont even care about the answer

  16. Rosh007
    • 2 years ago
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    it is best suited for inequality

  17. hba
    • 2 years ago
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    what will i do of the answer lol :D

  18. hba
    • 2 years ago
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    @Rosh007 Well it is fun to revise things back after 2 years,Rusted brains lol.

  19. tamtoan
    • 2 years ago
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    did you try factoring x^2 - 36 ? what are the 2 factors ?

  20. hba
    • 2 years ago
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    |dw:1353051849999:dw| Lets talk about the graph which makes me help understanding it.

  21. Rosh007
    • 2 years ago
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    @ha ha.... :)... by analyais it is a lot simpler... and may able to form mathematics from analysis too ;)

  22. hba
    • 2 years ago
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    Well i got it x >6 or x < -6

  23. hba
    • 2 years ago
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    The possible solutions . Thanks alot anyways.

  24. Rosh007
    • 2 years ago
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    :)

  25. Rosh007
    • 2 years ago
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    I wish I could give a best response to hba too... :(

  26. hba
    • 2 years ago
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    @Rosh007 give it to @tamtoan

  27. tamtoan
    • 2 years ago
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    rosh, (x-6)(x+6) > 0 ....this can only happen when both factors are possitive or both are negative

  28. Rosh007
    • 2 years ago
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    @hba yup.. I had given....... @tamtoan sure thanks I figured out..... & that is what hba got by analysis

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