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20
26. What is the 8 term in the sequence 200, 100,50, 25,...?
25
A
B
25
25
32
13
A씀
1
what is the common
27 In the geometric sequence, 54, -18.6,
ratio?
A. - B. c.
D를
2
28. What is the positive geometric mean between 4 and 100?
A 10 B. 20
C.30
D.40
29 Which of the following is NOT a root of x (x+3)(x + 3)(x - 1)
(2x + 1) = 0?
+
1.0
N.21
A. i only
B. i only
C. i and is only
D. ili and iv only
30. What is a factored form of P(x) = x4 + x + x2 + x?
A. (x) (x + 1)(x + 1)
C. (x) (x - 1) (x² + 1)
B. (*) (1) (x + 1)
D. (x) (-1) (x + 1)
31. Which of the following is a polynomial?
i x + 2x2 + 5x + 2
ii. 5x + 3x2 + x + 2
i 5x2 + 3x
A. i only
C. i and i
B. ii only
D. i and in
32. Which of the following is NOT a polynomial?
A. y² - 4y + 5
C.3r - 5r+ 2r - 1
B.5x3 + 9x2 + 12x +8
D. a-b3
33. Which of the following figures illustrate an arithmetic sequence?
A.
C
D.
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