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anonymous

  • one year ago

I REALLY NEED HELP, IT'S AN EMERGENCY!! WILL MEDAL

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  1. anonymous
    • one year ago
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    Here's a picture of the problem

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  2. Preetha
    • one year ago
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    You could pay for Qualified Help.

  3. anonymous
    • one year ago
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    I don't have the money

  4. anonymous
    • one year ago
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    @ganeshie8 @mathmate @paki @rishavraj @Bookworm14

  5. just_one_last_goodbye
    • one year ago
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    Still need help @rosebud4612flvs ? ^_^

  6. mathmate
    • one year ago
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    Solve by comparison, y=2x^2-1 y=-4x+1 Since both right-hand sides equal to y, you only have to equate them to get: (y=)2x^2-1=-4x+1 Transpose terms to get an expression ....=0 which matches one of the answers.

  7. anonymous
    • one year ago
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    I think I'm good; When I did it by myself I got x^2+2x-1=0

  8. mathmate
    • one year ago
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    You have probably missed a (-1) from the second equation.

  9. just_one_last_goodbye
    • one year ago
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    No problem ^_^ we believe everyone deserves an education but... it would be nice if you could get some qualified helper to help :) see... the people helping can give you a wrong answer but our QH help with a 100% step by step help and we can assure you that the answer will be correct (or your money back)

  10. anonymous
    • one year ago
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    I don't have money for a QH

  11. imqwerty
    • one year ago
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    don wrry :)

  12. just_one_last_goodbye
    • one year ago
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    ^ agreed ^_^

  13. anonymous
    • one year ago
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    Okay, so I know it's not C or D

  14. anonymous
    • one year ago
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    The one's would cancel out right?

  15. anonymous
    • one year ago
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    which would leave B?

  16. mathmate
    • one year ago
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    @just_one_last_goodbye Are you suggesting that non QH will give a wrong answer and QH will not?

  17. imqwerty
    • one year ago
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    \[-4x+1=y=2x^2-1\]\[-4x+1=2x^2-1\]can u find the answer now :)

  18. anonymous
    • one year ago
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    ?

  19. anonymous
    • one year ago
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    @mathmate is B correct?

  20. mathmate
    • one year ago
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    Follow what @imqwerty is working out for you. We're using the same method. @rosebud4612flvs

  21. imqwerty
    • one year ago
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    ok we know that- \[y=-4x+1\]and also that\[y=2x^2-1\] so -4x+1 and 2x^2-1 are both equal to y so they both are equal so we can write\[-4x+1=2x^2-1\]did u understand this step?@rosebud4612flvs

  22. anonymous
    • one year ago
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    Yes, I understand that step. What do I do next?

  23. anonymous
    • one year ago
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    Do I have to combine the x's?

  24. just_one_last_goodbye
    • one year ago
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    @mathmate I am stating that some non QH will probably give you a direct answer. and it might be wrong. Not all tho ^_^ Forgive me if I said it wrong

  25. anonymous
    • one year ago
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    Okay so would I do 2x^2-1+(-4x+1)?

  26. anonymous
    • one year ago
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    ugh

  27. anonymous
    • one year ago
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    I think I did that wrong

  28. mathmate
    • one year ago
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    @just_one_last_goodbye whew! it's a little more clear!

  29. imqwerty
    • one year ago
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    yes :) its correct so now u have this-\[-4x+1-(-4x+1)=2x^2 - 1 -(-4x+1)\] now open the brackets

  30. anonymous
    • one year ago
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    okay so the first part cancels out

  31. anonymous
    • one year ago
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    and that leaves me with 2(x^2−1+2x)

  32. anonymous
    • one year ago
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    is that correct?

  33. imqwerty
    • one year ago
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    yes and what about the right hand side

  34. anonymous
    • one year ago
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    is it 2(x^2−1+2x)

  35. anonymous
    • one year ago
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    would it be C?

  36. anonymous
    • one year ago
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    x^2+2x-1=0

  37. imqwerty
    • one year ago
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    no, what did u get on opening the bracket on the right hand side?

  38. anonymous
    • one year ago
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    on the right hand side I got 2(x2−1+2x)

  39. imqwerty
    • one year ago
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    yes that is correct :D so now we have- \[0=2(x^2-1+2x)\]opening the bracket u get-\[0=2(x^2)+2(-1)+2(2x)\]\[0=2x^2-2+4x\] thas ur answer :)

  40. anonymous
    • one year ago
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    should it have been 2x^2-1+4x+1?

  41. anonymous
    • one year ago
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    oh wait forget that

  42. anonymous
    • one year ago
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    THANK YOU SO MUCH

  43. imqwerty
    • one year ago
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    have u understood how we got the answer ?

  44. anonymous
    • one year ago
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    It was correct :) and I understand it so much better now thank you

  45. imqwerty
    • one year ago
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    np (:

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