for which the sys y +z = 6, 4x + Ay = -5 has infinitely m a root of which qu: %D :

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter1: Systems Of Linear Equations
Section1.2: Guassian Eliminationa And Guass-jordan Elimination
Problem 53E
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If A is a real number for which the system of
linear equations x + y + z = 6, 4x + Ay – Az = -
2, and 3x + 2y - 4z = -5 has infinitely many
solutions, then A is a root of which quadratic
equation?
%D
%3D
1.
12 + 31 - 4 = 0
12 -1 - 6 = 0
3.
12 - 31 - 4 = 0
4.
12+1 - 6 = 0
2.
Transcribed Image Text:If A is a real number for which the system of linear equations x + y + z = 6, 4x + Ay – Az = - 2, and 3x + 2y - 4z = -5 has infinitely many solutions, then A is a root of which quadratic equation? %D %3D 1. 12 + 31 - 4 = 0 12 -1 - 6 = 0 3. 12 - 31 - 4 = 0 4. 12+1 - 6 = 0 2.
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