Perform the indicated operation. Write the result in the form a + bi.(4 + 2i)2
A. 12 + 16i
B. 16 + 4i
C. 20 + 16i
D. 16 - 4i
Answer: A
Mathematics
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Write a fraction to represent the shaded area of the figure.
A. 
B. 
C. 
D. 
Mathematics
Find the center and radius of the circle.y2 = 81 - (x - 4)2
A. Center: (0, -4); radius: 9 B. Center: (-4, 0); radius: 81 C. Center: (0, 4); radius: 81 D. Center: (4, 0); radius: 9
Mathematics
Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators.Find tan B when a = 7 and b = 5.
A. 
B. 
C. 
D. 
Mathematics
For the given function f(x), find f-1(x).f(x) = 8x
A. f-1(x) = 8 + x
B. f-1(x) = 
C. f-1(x) = 8x
D. f-1(x) = 
Mathematics