Use Descartes' rule of signs to find the number of possible positive, negative, and nonreal roots for the following equation.4x7 + 9x2 + 5x + 10 = 0
A. 0 positive; 1 negative; 6 nonreal
B. 2 positive; 1 or 3 negative; 4 or 0 nonreal
C. 0 positive; 0 negative; 7 nonreal
D. 0 positive; 0 or 2 negative; 5 or 7 nonreal
E. none of these
Answer: E
Mathematics
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Find the nonreal complex solutions of the equation.x2 + 4x + 29 = 0
A. {2 + 5i, 2 - 5i}
B. {-2 + 
i, -2 - 
i}
C. {-2 + 5i, -2 - 5i}
D. {3, -7}
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Find the sum.-3 + 2
A. 5 B. -1 C. -5 D. 1
Mathematics
Use the laws of exponents to simplify. Write the answer with positive exponents.
A. 
B. 64
C. 81/2
D. 2
Mathematics
Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.(-5)-2
A. 25
B. 
C. -25
D. - 
Mathematics