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OpenStudy (anonymous):
Find the value(s) for k such that 2x^2-4x+k=0 has 2 imaginary roots.
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OpenStudy (campbell_st):
you need to use the discriminant and let it be less than zero \[b^2 - 4ac < 0\] you have a = 2, b = -4 and c = k substitute and solve.
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