4. Let F = {s+t√2 s,te Q}. Show that F is a subfield of R. You may assume that √2&Q.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.2: Exponential Functions
Problem 58E
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4. Let F = {s+t√2 s,te Q}. Show that F is a subfield of R. You may assume that
√2&Q.
Transcribed Image Text:4. Let F = {s+t√2 s,te Q}. Show that F is a subfield of R. You may assume that √2&Q.
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