48. If x = 6 + 9i a zero of a polynomial function, f (x), what else must be a zero? (A) 9 - 6i (C) 9+ 6i (B) 6 – 9i (D) Ø 11 (A) (1) (4) (4) lomdak (A) T6' 3 2 3,1, 3 2,2, 3,4, 6, 12} 46. Given f (x) = x4 – 23.x2 + 18x + 40, find all zeros of f(x). (A) {-1,2,4,5} (C) {-2, –1,4, 5} (B) {-5, –2, –1,4} (D) {-5, –1,2, 4} 47. Given f(x) = x4 + x³ – 4.x2 – 34x – 120, find all zeros of f(x). (A) {-3,4, –1 – 3i, –1+3i} (C) {-3,4,1 – 3i, 1+ 3i} (B) {-3,4, –1+ 3i, 1 – 3i} (D) {-3,4, -1- 3і, 1 + 3і} 33 20 ப 104-)0) (() Isimoion
48. If x = 6 + 9i a zero of a polynomial function, f (x), what else must be a zero? (A) 9 - 6i (C) 9+ 6i (B) 6 – 9i (D) Ø 11 (A) (1) (4) (4) lomdak (A) T6' 3 2 3,1, 3 2,2, 3,4, 6, 12} 46. Given f (x) = x4 – 23.x2 + 18x + 40, find all zeros of f(x). (A) {-1,2,4,5} (C) {-2, –1,4, 5} (B) {-5, –2, –1,4} (D) {-5, –1,2, 4} 47. Given f(x) = x4 + x³ – 4.x2 – 34x – 120, find all zeros of f(x). (A) {-3,4, –1 – 3i, –1+3i} (C) {-3,4,1 – 3i, 1+ 3i} (B) {-3,4, –1+ 3i, 1 – 3i} (D) {-3,4, -1- 3і, 1 + 3і} 33 20 ப 104-)0) (() Isimoion
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Complex Numbers
Section4.2: Complex Solutions Of Equations
Problem 7ECP: Find the cubic polynomial function f with real coefficients that has 1 and 2+i as zeros, and f2=2.
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Transcribed Image Text:48. If x = 6 + 9i a zero of a polynomial function, f (x), what else must be a zero?
(A) 9 - 6i
(C) 9+ 6i
(B) 6 – 9i
(D) Ø
11
(A)
(1)
(4)
(4)
lomdak (A)
Transcribed Image Text:T6' 3 2 3,1,
3 2,2, 3,4, 6, 12}
46. Given f (x) = x4 – 23.x2 + 18x + 40, find all zeros of f(x).
(A) {-1,2,4,5}
(C) {-2, –1,4, 5}
(B) {-5, –2, –1,4}
(D) {-5, –1,2, 4}
47. Given f(x) = x4 + x³ – 4.x2 – 34x – 120, find all zeros of f(x).
(A) {-3,4, –1 – 3i, –1+3i}
(C) {-3,4,1 – 3i, 1+ 3i}
(B) {-3,4, –1+ 3i, 1 – 3i}
(D) {-3,4, -1- 3і, 1 + 3і}
33 20
ப
104-)0)
(()
Isimoion
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