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Destinyyyy

  • one year ago

Can someone please help me with these last 5 problems? Ive been working on this all day.

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  1. Destinyyyy
    • one year ago
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    Solve using appropriate substitution. (x^2 -6x)^2 -11(x^2 -6x) -30=0

  2. Destinyyyy
    • one year ago
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    Im at the end where I factor for the second time

  3. Destinyyyy
    • one year ago
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    x^2 -6x-5=0 x^2 -6x-6=0

  4. Destinyyyy
    • one year ago
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    (x-1)(x-5)=0 I cant seem to factor the second one.. I dont get why

  5. tkhunny
    • one year ago
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    Have you met the "Discriminant"? \((-6)^{2} - 4(1)(-5) = 36 + 20 = 56\) 56 is not a perfect square. You will not be able to factor it. Your factorization is not correct. \((-6)^{2} - 4(1)(-6) = 36 + 24 = 60\) 60 is not a perfect square. You will not be able to factor it.

  6. Destinyyyy
    • one year ago
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    ????

  7. Destinyyyy
    • one year ago
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    Where are you getting all that from?

  8. Destinyyyy
    • one year ago
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    @freckles

  9. tkhunny
    • one year ago
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    You didn't answer my first question. If you have not met the "Discriminant", that will not make much sense. Anyway, (x-1)(x-5) = x^2 - 6x + 5 -- The sign on the constant term is not correct as you have it factored. Have you encountered ANY situation where things cannot be factored? There are other ways to proceed when factoring fails.

  10. Destinyyyy
    • one year ago
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    I have in the last section the other day..

  11. Destinyyyy
    • one year ago
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    Yes but all my previous examples and help from people have only factored so I didnt think I was allowed to do a different way

  12. tkhunny
    • one year ago
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    Well, we're stuck on these. They can't be factored. I hope the assignment was not meant just to frustrate you. It's time to pull out the Quadratic Formula or "Completing the Square" or anything else you have in your experience.

  13. Destinyyyy
    • one year ago
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    Okay

  14. Destinyyyy
    • one year ago
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    3+- square root 15

  15. Destinyyyy
    • one year ago
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    3+- square root 14

  16. Destinyyyy
    • one year ago
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    My answers are wrong.

  17. Destinyyyy
    • one year ago
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    @IrishBoy123

  18. tkhunny
    • one year ago
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    Since you haven't told us what the question is, it's pretty tough to help you with that. You also haven't shown your work.

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