Mathematics, 05.08.2021 19:20 matlenanem4437
If a polynomial with real coefficients is of degree 3. Can we say there must be at least 1 real root?
a. Yes, because complex roots must appear in conjugate pairs, leaving one root real. b. No. we can’t say anything about this case
c. Yes, because if there is one real root, there must be two additional real roots
d. No, because such a curve never crosses the x-axis
e. Sometimes yes and sometimes no
Answers: 1
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If a polynomial with real coefficients is of degree 3. Can we say there must be at least 1 real root...
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