In Exercises 5-8, solve the linear system by Gaussian elimi- nation. 5. X1 + x + 2xz = 8 -X - 2x, + 3x = 1 7x2 + 4x = 10 6. 2x, + 2x2 + 2x3 = 0 -2x, + 5x2 + 2x3 = 1 3x, - &x, + x2 + 4x; = -1

College Algebra
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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter5: Systems Of Equations And Inequalities
Section: Chapter Questions
Problem 5CC
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In Exercises 5-8, solve the linear system by Gaussian elimi-
nation.
5. x1 + x2 + 2x3
6. 2x1 + 2x2 + 2x3 = 0
-XI - 2x2 + 3x = 1
7x2 + 4x = 10
-2x, + 5x2 + 2.x, = 1
8x, + x2 + 4x3 = -1
3x, -
Transcribed Image Text:In Exercises 5-8, solve the linear system by Gaussian elimi- nation. 5. x1 + x2 + 2x3 6. 2x1 + 2x2 + 2x3 = 0 -XI - 2x2 + 3x = 1 7x2 + 4x = 10 -2x, + 5x2 + 2.x, = 1 8x, + x2 + 4x3 = -1 3x, -
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