Find the domain of f(x)= square root of x^2-4x-5

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.4: Complex And Rational Zeros Of Polynomials
Problem 14E
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Find the domain of f(x)= square root of x^2-4x-5

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Step 1

Given:

Calculus homework question answer, step 1, image 1
Step 2

Concept:

The negative values in the square root doesn’t exist.

Step 3

The factor of the quadratic equation is as follows:

Calculus homework question answer, step 3, image 1
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