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13 January, 07:37

Solve for x 4x^2+28x+49=0

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  1. 13 January, 11:08
    0
    4 x^2 + 28 x + 49 = 0

    Divide both sides by 4:

    x^2 + 7 x + 49/4 = 0

    Write the left hand side as a square:

    (x + 7/2) ^2 = 0

    Take the square root of both sides:

    x + 7/2 = 0

    Subtract 7/2 from both sides:

    Answer: x = - 7/2
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