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03-11-2016
Mathematics

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

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bgunn12345678 bgunn12345678

03-11-2016

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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