12. If 2 does not divide xy, then 2 does not divide x and 2 does not divide y.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.1: Rectangular Coordinate Systems
Problem 32E
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III. Prove the following using Indirect Proof.
12. If 2 does not divide xy, then 2 does not divide x and 2 does not divide y.
13. If 8 ł x in x? + 2x + 1 = 3x2 – 3x - 9, then x is even.
Transcribed Image Text:III. Prove the following using Indirect Proof. 12. If 2 does not divide xy, then 2 does not divide x and 2 does not divide y. 13. If 8 ł x in x? + 2x + 1 = 3x2 – 3x - 9, then x is even.
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