Use the theorem on bounds to establish the best integral bounds for the roots of the equation.-7x4 - 2x3 + 6x + 9 = 0
A. -1 < x < 2
B. -1 < x < 1
C. No bound can be determined.
D. -2 < x < 2
Answer: A
Mathematics
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A. 10 B. 20 C. -10 D. -20
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Evaluate the expression.
?
?
A. 6 B. 9 C. 10 D. 4
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Use the even-odd properties to find the exact value of the expression. Do not use a calculator.cot 
A. 1
B. - 
C. -
D. -1
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State the value of the discriminant and the number of real solutions.7x2 - 28 = 0
A. 0, one B. -784, two C. 784, two D. 784, one
Mathematics