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Abbie23

  • 4 years ago

2x2 + 9x + 4 = 0 solve by using the quadratic formula.

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  1. bendt
    • 4 years ago
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    \[ax^2+bx+c=0\implies x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\]Work it out for yourself.

  2. Annand
    • 4 years ago
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    just substitute a,b and c into the eqn provided by bendt... here a=2 b=9 c=4

  3. radar
    • 4 years ago
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    and verify the results by factoring.

  4. Abbie23
    • 4 years ago
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    Aww thanks you're awesome:)

  5. Annand
    • 4 years ago
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    That was another method of finding the roots... Sorry, i deleted it thinking it might confuse you...

  6. Abbie23
    • 4 years ago
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    It's okay you still tried to help so that's all that matters:)

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