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OpenStudy (anonymous):
Which of the following polynomials does not have real roots? A.-x4 + 5x2 + 6 B.x2 + x + 7 C.x2 + 4x - 4 D.2x4 + 13x3 + 21x2
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OpenStudy (anonymous):
B
OpenStudy (anonymous):
you sure?
OpenStudy (anonymous):
yes
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