(a) Let Q[2] = (a + b2|a, b Q}. Prove that (Q[[2], +, ) is a...
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(Q[[√2], +, •) is a subring of the field (R, +, •)• (Here the binary operations in R and Q[√2] are those of ordinary addition and multiplication of real numbers.)
(b) Prove that Q[√2] is a field and that Q[x] /(x2- 2) is isomorphic to Q[√2]
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Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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