Answered: Зx, + 5х, — &x; + 5x4 — —8 %3D X1 + х +…

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Зx, + 5х, — &x; + 5x4 — —8 %3D X1 + х + 2х, — Зх; + х4 — —7 2х1 + 3x, — 7x; + 3x4 — — 11 4x, + 8x2 — 10х; + 7x4 3D — 10

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter7: Percents

Section: Chapter Questions

Problem 18PTTS

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Concept explainers

Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.

Question

Solve the system of equations using matrices.Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.

Зx, + 5х, — &x; + 5x4 — —8
%3D
X1 +
х + 2х, — Зх; + х4 — —7
2х1 + 3x, — 7x; + 3x4 — — 11
4x, + 8x2 — 10х; + 7x4 3D — 10

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