X = { 0₁ A₁ A²₁ √ 3 and X₂ = { 0, B₁, B², √ ? are o fields but X, U X₂ is not. Why

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 46E
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Sigma fields
X = { Ø₁ A₁ A², 3 and X₂ = { 0₁, B₁, B², J2 3
are o fields but X, U X₂ is not. Why?
Transcribed Image Text:X = { Ø₁ A₁ A², 3 and X₂ = { 0₁, B₁, B², J2 3 are o fields but X, U X₂ is not. Why?
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