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2 February, 13:59

A triangle has angles with the following measures: (x2 + 34) °, (6x + 4) °, and (10x + 10) °. Solve for x.

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  1. 2 February, 15:35
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    The angles in a triangle add up to 180 so:

    X^2 + 34 + 6x + 4 + 10x + 10 = 180

    Tidy up to get a trinomial:

    X^2 + 16x - 132 = 0

    Solve for x.

    (X + 22) (X - 6) = 0

    X = - 22 or X = 6

    Since an angle cannot be negative, it must be X = 6.
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