Q9. (a) (i) Calculate (2 + i√5)(√5 - i). (ii) Hence verify that (√5 - i) is a root of the equ

College Algebra (MindTap Course List)
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ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter1: Equations And Inequalities
Section1.CR: Chapter Review
Problem 67E: 67. Calculate the discriminant associated with the equation 6x2+5x+1=0.
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Q9.
(a) (i)
(ii)
Calculate (2 + i√5)(√5 - i).
Hence verify that (√5 - i) is a root of the equation
(2 + i√5)z = 3z*
where z* is the conjugate of z.
Transcribed Image Text:Q9. (a) (i) (ii) Calculate (2 + i√5)(√5 - i). Hence verify that (√5 - i) is a root of the equation (2 + i√5)z = 3z* where z* is the conjugate of z.
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