31. X1 3x3 = -2 - 3x, + X2 2x3 %D - 2x, + 2x, + X3 : 4 %3D

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter7: Exponents And Exponential Functions
Section7.1: Multiplication Properties Of Exponents
Problem 4AGP
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Question
Solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination
3x3 = -2
- 2x3
2.x1 + 2x2 + X3
31.
X1
3x, + X2
-
4
32. 3x, – 2x, + 3x3
22
24
3x2
7x2
X3
6x1
- 22
-
3x3
3
33. 2х, +
4.x, – 3x, + 7x3 =
9x2 + 15x3
-
8x, –
10
34. x, + x2 - 5x3 = 3
- 2x3 = 1
2x, – x2 - X3 = 0
35. 4x + 12y – 7z - 20w = 22
X1 +
X1
-
%3D
3x + 9y – 5z – 28w = 30
-
x + 2y + z =
36.
8
- 3x – 6y – 3z = - 21
Transcribed Image Text:3x3 = -2 - 2x3 2.x1 + 2x2 + X3 31. X1 3x, + X2 - 4 32. 3x, – 2x, + 3x3 22 24 3x2 7x2 X3 6x1 - 22 - 3x3 3 33. 2х, + 4.x, – 3x, + 7x3 = 9x2 + 15x3 - 8x, – 10 34. x, + x2 - 5x3 = 3 - 2x3 = 1 2x, – x2 - X3 = 0 35. 4x + 12y – 7z - 20w = 22 X1 + X1 - %3D 3x + 9y – 5z – 28w = 30 - x + 2y + z = 36. 8 - 3x – 6y – 3z = - 21
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