Find the product of the given complex number and its conjugate. Write the answer in the form a + bi.
+ 2i
A. - 
B. 
C. 
+ 4i
D. 
- 4i
Answer: B
Mathematics
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Find the derivative.y = 2x4 + 3x3 - 6
A. 8x3 + 9x2 - 7 B. 4x3 + 3x2 - 7 C. 4x3 + 3x2 D. 8x3 + 9x2
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Name the quadrant in which the point is located.(-20, -6)
A. I B. II C. III D. IV
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Find the partial fraction decomposition for the rational expression.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
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Solve the problem.In a certain location, the highest temperature recorded was 103°F. The lowest temperature recorded was 131 degrees less than the highest. What was the lowest temperature?
A. 28°F B. 0°F C. -138°F D. -28°F
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