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

You might also like to view...

Find the derivative.y = 2x4 + 3x3 - 6

A. 8x3 + 9x2 - 7 B. 4x3 + 3x2 - 7 C. 4x3 + 3x2 D. 8x3 + 9x2 

Mathematics

Name the quadrant in which the point is located.(-20, -6)

A. I B. II C. III D. IV

Mathematics

Find the partial fraction decomposition for the rational expression.

A.  + 
B.  + 
C.  + 
D.  + 

Mathematics

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

Mathematics