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anonymous

  • one year ago

~I will fan and medal~ Part B: Solve 9x2 + 3x − 2 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used. (5 points) Please answer ASAP!

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  1. DanJS
    • one year ago
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    Cant go wrong always using the quadratic formula

  2. DanJS
    • one year ago
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    i would try to factor it first before that though...

  3. anonymous
    • one year ago
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    True.. I'll try that. @DanJS

  4. DanJS
    • one year ago
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    9 1 2 1 3 3 i think you can make that +3 in the middle from those

  5. DanJS
    • one year ago
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    3*2 - 3*1

  6. DanJS
    • one year ago
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    Or just use the quadratic formula,, reason: always works.. :)

  7. anonymous
    • one year ago
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    When I used the quadratic formula, I got 0.3333333~ and -0.66666666666667..

  8. anonymous
    • one year ago
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    @DanJS

  9. DanJS
    • one year ago
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    hmm... real fast by factoring first \[9x^2+3x-2 = (3x - 1)*(3x+2) = 0\]

  10. DanJS
    • one year ago
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    so either of those quantities in ( ) can be zero to be true 3x - 1 = 0 or 3x + 2 = 0

  11. DanJS
    • one year ago
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    so you have it right, just decimal form

  12. DanJS
    • one year ago
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    x = + 1/3 or x = - 2/3 i would leave it like that

  13. anonymous
    • one year ago
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    Alright, I got it now. Thanks for the help!

  14. DanJS
    • one year ago
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    welcome, anytime

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