Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form.
10
A. 
- 
i
B. 
+ 
i
C. - 
+ 
i
D. - 
- 
i
Answer: D
Mathematics
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Use the prime factorization method to find the LCM of the given numbers.24, 18, and 20
A. 180 B. 120 C. 360 D. 480
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Express the rational expression in lowest terms.
A. 
B. 11m6p2
C. 11mp
D. 
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Use a special product formula to simplify.(-2x - 3)2
A. -2x2 + 9 B. 4x2 + 12x + 9 C. 4x2 + 9 D. -2x2 + 12x + 9
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Use the dot product to determine whether the vectors are parallel, orthogonal, or neither.v = i + 
j, w = i - 3j
A. orthogonal B. parallel C. neither
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