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19 March, 17:25

If the equation x² - kx - 36 = 0 has x = 12 as one root, what is the value of k?

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  1. 19 March, 17:54
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    To solve for k, just plug in the x provided:

    12^2 - k (12) - 36 = 0

    144 - k (12) = 36

    -k (12) = 1/4

    k = - 1/48
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