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OpenStudy (anonymous):
If one of the roots of the equation x^2+kx-12=0 is 4, what is the value of k? a. -1 c. 1 b. 0 d. 3
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OpenStudy (anonymous):
c
OpenStudy (anonymous):
(x-3)(x+4) = x^2 + x - 12
jhonyy9 (jhonyy9):
16+4k-12=0 4k+4=0 4k=-4 k=-4/4 =-1 a. is true
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