Algebra and Trigonometry: Structure and Method, Book 2

2000th Edition

ISBN: 9780395977255

Author: MCDOUGAL LITTEL

Publisher: McDougal Littell

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Concept explainers

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

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Question

Chapter 4.9, Problem 1ST

To determine

To solve:The given equation.

Expert Solution & Answer

Answer to Problem 1ST

The simplified answer is [x=14,−3]

Explanation of Solution

Given information:

The term is given as: x2−11x−42=0

Formula used:use factor formula.

Calculation:

The given equation can be solved as:

x2−11x−42=0x=−b±(b)2−4ac2a use factor formula.x=−(−11)±(−11)2−4×1×(−42)2x=11±121+1682x=11±172Eitherx=11+172x=14orx=11−172x=−3Hence [x=14,−3].

Chapter 4.9, Problem 12MRE

Chapter 4.9, Problem 2ST

Chapter 4 Solutions

Algebra and Trigonometry: Structure and Method, Book 2

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