The condition that the roots of the equation x³ - px² +qx-r=0 may be in arithmetical progression is (a) p³-9pq-27r=0 (b) 2p³-9pq-27r=0 (c) 2p³-9pq+27r=0 (d) None of these

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.4: Graphs Of Quadratic Equations: The Discriminant
Problem 20WE
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The condition that the roots of the equation x³.
1
px² +qx-r=0 may be in arithmetical progression
is
(a) p³-9pq-27r=0
(b) 2p³-9pq-27r=0
(c) 2p³ -9pq + 27r=0
(d) None of these
Transcribed Image Text:The condition that the roots of the equation x³. 1 px² +qx-r=0 may be in arithmetical progression is (a) p³-9pq-27r=0 (b) 2p³-9pq-27r=0 (c) 2p³ -9pq + 27r=0 (d) None of these
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