22 – 4z + 4 Find limz→2 z2 – 4

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 21E
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22 – 4z + 4
Find limz→2
z2 – 4
Transcribed Image Text:22 – 4z + 4 Find limz→2 z2 – 4
Expert Solution
Step 1 Calculation

      limz2z2-4z+4z2-4

    =limz2(z-2)2(z+2)(z-2)

     =limz2(z-2)(z+2

      =2-22+2

       =04

        =0

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