Find the range of the given function.f(x) = 4x2 + 8x - 1
A. [-5, ?)
B. [-1, ?)
C. (-?, 5]
D. (-?, 1]
Answer: A
Mathematics
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Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(3i)2
A. -9i B. 9i C. 9 D. -9
Mathematics
Simplify.
A. 1 B. -1 C. 0 D. not defined
Mathematics
Write the number in scientific notation.6912
A. 6.912 × 103 B. 6.912 × 10-3 C. 6.912 × 104 D. 6.912 × 101
Mathematics
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. 
Mathematics