15th Edition

ISBN: 9781938168994

Author: OpenStax

Publisher: OpenStax

Concept explainers

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.

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Textbook Question

Chapter 10.3, Problem 10.80TI

Multiply: ( 7 x + 4 ) ( 7 x − 8 ) .

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Chapter 10.3, Problem 10.79TI

Chapter 10.3, Problem 10.81TI

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Question 1. Solve the system - x1 x2 + 3x3 + 2x4 -x1 + x22x3 + x4 2x12x2+7x3+7x4 Question 2. Consider the system = 1 =-2 = 1 3x1 - x2 + ax3 = 1 x1 + 3x2 + 2x3 x12x2+2x3 = -b = 4 1 For what values of a, b will the system be inconsistent? 2 For what values of a, b will the system have only one solution? For what values of a, b will the saystem have infinitely many solutions?

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Chapter 10 Solutions

PREALGEBRA

Ch. 10.1 - Determine whether each polynomial is a monomial,...Ch. 10.1 - Determine whether each polynomial is a monomial,...Ch. 10.1 - Find the degree of the following polynomials: a....Ch. 10.1 - Find the degree of the following polynomials: a....Ch. 10.1 - Add: 12x2+5x2 Ch. 10.1 - Add: 12y2+8y2.Ch. 10.1 - Subtract: 9n(5n)Ch. 10.1 - Subtract: 7a3(5a3)Ch. 10.1 - Add: 3x2+3y25x2 Ch. 10.1 - Add: 2a2+b24a2

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