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Math Help - Quadractic equations

  1. #1
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    Quadractic equations

    Hello everyone, I need help with one more question and that's using the quadractic formula to solve 16x2 + 96x + 128 = 0 and -4x2 + 28x 48 = 0. Could someone tell me the answer to both so I can hurry and submit the assignment, I've been really waiting to see what I get on this.
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  2. #2
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    But if we solve these equations for your assignment it wont be your work.

    I suggest studying this, for ax^2+bx+c=0 then x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

    It will give you the answer.
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  3. #3
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    Quote Originally Posted by pickslides View Post
    But if we solve these equations for your assignment it wont be your work.

    I suggest studying this, for ax^2+bx+c=0 then x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

    It will give you the answer.
    I know, I've been studying this formula and I have been getting all kinds of things, that's why I posted the question.
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  4. #4
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    Quote Originally Posted by tysonrss View Post
    Hello everyone, I need help with one more question and that's using the quadractic formula to solve 16x2 + 96x + 128 = 0 and -4x2 + 28x 48 = 0. Could someone tell me the answer to both so I can hurry and submit the assignment, I've been really waiting to see what I get on this.
    16x^2 + 96x + 128 = 0

    divide every term by 16 ....

    x^2 + 6x + 8 = 0

    this is a factorable quadratic ... do it.

    ---------------------------------------

    -4x^2 + 28x - 48 = 0

    start by dividing every term by -4 ... same song, second verse.
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  5. #5
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    Break down the first term:
    16x^2 compared to ax^2

    Do you see to what the "a" term may be equal?
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  6. #6
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    Quote Originally Posted by tysonrss View Post
    Hello everyone, I need help with one more question and that's using the quadractic formula to solve 16x2 + 96x + 128 = 0 and -4x2 + 28x 48 = 0. Could someone tell me the answer to both so I can hurry and submit the assignment, I've been really waiting to see what I get on this.
    Assignments usually count towards a student's final grade. MHF policy is to not knowingly help with such questions - it's meant to be the work of the student, not the work ofothers.

    Thread closed (you can discuss this with me via pm if you want).
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