v p) (d-A b) v (d-b-) - (b -d pq) v (-r--q) ^ (Gr V p) p) v (-p-q)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 12E
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Question
Which of the following is a tautology?

Transcribed Image Text:(pv t)A (pv -s)
(d- A b) v (d-b-) - (b -d)
(p -q) v (-r--q) ^ (-r V p)
(q--p) v (-p--
pA (q-r)) v (q-r)
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