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Math Help - Find all real solutions to x

  1. #1
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    Find all real solutions to x

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  2. #2
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    Quote Originally Posted by tmac11522 View Post
    what have you done so far?
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  3. #3
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    i multiplied both sides of the equation by (2x+5)(x+4), simplified and got it down to 0=3x^2+10x+35 and i'm stuck
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  4. #4
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    Quote Originally Posted by tmac11522 View Post
    i multiplied both sides of the equation by (2x+5)(x+4), simplified and got it down to 0=3x^2+10x+35 and i'm stuck
    now use quadratic formula....
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  5. #5
    Senior Member topher0805's Avatar
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    Quote Originally Posted by tmac11522 View Post
    i multiplied both sides of the equation by (2x+5)(x+4), simplified and got it down to 0=3x^2+10x+35 and i'm stuck
    Recall that a quadratic of the form:

    ax^2 + bx + c = 0

    Can be solved by using this equation:

    <br />
x =  \frac{-b \pm \sqrt {b^2 - 4ac}}{2a}
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