Solve the equation. Write the answer in a + bi form.x2 + 1 - 
i = 0
A. 6 - 2i, -6 - 2i
B. 
- 
, - 
+ 
C. 
+ 
i, - 
- 
i
D. 
+ 
i, - 
- 
i
Answer: C
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Find the first four terms of the binomial series for the given function.(1 - 7x)1/2
A. 1 - 
x - 
x2 - 
x3
B. 1 - 
x + 
x2 - 
x3
C. 1 + 
x + 
x2 - 
x3
D. 1 - 
x - 
x2 - 
x3
Factor completely.20z2 + 3z - 9
A. (20z + 3)(z - 3) B. (4z + 3)(5z - 3) C. (20z + 1)(z - 9) D. (4z - 3)(5z + 3)
Use the information below to determine the indicated set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}A' ? B
A. {1, 2, 3, 4, 5, 6, 8, 10, 12} B. {2, 3, 4, 5, 6, 8} C. {2, 4, 6} D. {1, 2, 3, 4, 5, 6, 8, 10}
Find the first six terms of the sequence.a1 = 2, an = 3 ? an-1
A. 2, 6, 9, 12, 15, 18 B. 6, 18, 54, 162, 486, 1458 C. 2, 6, 18, 54, 162, 486 D. 0, 3, 6, 9, 12, 15