Black hole
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The document shows an algebraic manipulation that begins with equating X squared to itself, then subtracting X squared from both sides and factorizing the expression on the right side. This leads to equating 1 to 2, which is a contradiction, suggesting there is an error in the steps.
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ข้อสอบกลางภาคเรียนที่ 1 ปีการศึกษา 2555 ม.3 พื้นฐาน
1. This document contains 30 systems of linear equations with their corresponding solutions.
2. The linear systems range from 2 to 4 equations each and are presented in a table format with the equations on the left and solutions on the right.
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ข้อสอบกลางภาคเรียนที่ 1 ปีการศึกษา 2555 ม.3 พื้นฐาน
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Black hole
- 1. By Grup 6
- 3. X2 = X2 X2 - X2 = X2 - X2 X (X - X ) = ( X + X )( X - X ) X (X - X ) = ( X + X )( X - X ) X = X + X X = 2 X 1 = 2 (1) So ……. 1 = 2 +( -X2 ) X2 - Y2 = (X - Y )(X + Y)