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Questions  >>  SAT  >>  Math  >>  Quadratic Equations
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Find the value of $k$ for which the equation $2x^2-(k-1)x+8=0$ will have real and equal roots.

$\begin{array}{1 1} (a)\;-7 \geq k \geq 9 \\ (b)\; -7 \leq k \leq 9 \\(c)\; -7 < k \leq 9 \\ (d)\; -7>k>9 \end{array}$

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