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Solve for x: (2x - 4)2 = 1 A. 2, 3 B. 3/2, 5/2 C. 3/2, 3/5 D. 3/2, -5/2
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Asked 12/31/2012 11:01:07 AM
Updated 8/1/2014 12:40:07 PM
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User: Solve for x: (2x - 4)2 = 1 A. 2, 3 B. 3/2, 5/2 C. 3/2, 3/5 D. 3/2, -5/2

Weegy: The answer is A. 2,3.
Expert answered|Kaywat08|Points 0|

Question|Rated good
Asked 12/31/2012 11:01:07 AM
Updated 8/1/2014 12:40:07 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by andrewpallarca [8/1/2014 12:40:07 PM]
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(2x - 4)^2 = 1;
4x^2 - 16x + 16 = 1;
4x^2 - 16x + 16 - 1 = 0;
4x^2 - 16x + 15 = 0;
(2x - 3)(2x - 5) = 0;
2x - 3 = 0; 2x = 3; x = 3/2;
2x - 5 = 0; 2x = 5; x = 5/2;
Solutions: x = 3/2 or x = 5/2
Added 8/1/2014 12:40:04 PM
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