Use Descartes's Rule of Signs to Obtain Information Regarding the Roots

question 5

Multiple Choice

Use Descartes's rule of signs to obtain information regarding the roots of the equation. $x ^ { 9 } + 5 = 0$

• A) 1 negative root, 8 complex roots
• B) 9 complex roots
• C) 1 negative root, 9 complex roots
• D) 1 positive root, 1 negative real root, 7 complex roots
• E) 1 positive root, 8 complex roots

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