Why was the -12 factored out?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 17RE
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Why was the -12 factored out?
Transcribed Image Text:Why was the -12 factored out?
-4
(6-3√7)
(6+35) -4х (6+3v7)
Съезд)
(6-3√7)(6+3√7)
-24-12√7
6x6-317x317
4
= +12(2+√7)
2то
=
-12x(2+√7)
36-9x7
4(2+√7)
9
-
-12(2+√7)
36-63
Transcribed Image Text:-4 (6-3√7) (6+35) -4х (6+3v7) Съезд) (6-3√7)(6+3√7) -24-12√7 6x6-317x317 4 = +12(2+√7) 2то = -12x(2+√7) 36-9x7 4(2+√7) 9 - -12(2+√7) 36-63
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