Correction des exercices. Exercice 25 page 76. A = 5x 3( x 12) . B = 3x 6 7(2 x 4) . A = 5x (3)( x 12) . B = 3x 6 7 2 x 7 4 . A = 5x (3) x (3) 12 . B = 3x 6 14x 28 . A = 5x (3x) (36) . B = 3x 14x 6 28...
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Correction des exercices. Exercice 25 page 76. A = 5x 3( x 12) . B = 3x 6 7(2 x 4) . A = 5x (3)( x 12) . B = 3x 6 7 2 x 7 4 . A = 5x (3) x (3) 12 . B = 3x 6 14x 28 . A = 5x (3x) (36) . B = 3x 14x 6 28 . B = 17 x 22 . A = 2 x (36) . A = 2x 36 . C = 2x² x(4x 5) . D = 4x² x x(5x 9) . C = 2x² x[4x (5)] . D = 4x² x x[5x (9)] . C = 2x² x 4x x (5) . D = 4x² x x 5x x (9) . C = 2 x² 4 x² (5x) . D = 4x² x 5x² (9 x) . C = 6 x² (5x) . D = 4x² 5x² x (9x) . C = 6 x² 5 x . D = 9x² 10x . Exercice 26 page 76. 2(b 6) 7(b 1) 2 (b 6) 7 (b 1) . 2 b 2 6 7 b 7 1 . 2b 12 7b 7 . 9b 5 . 10(b 9) 6(7 b) 10 (b 9) (6) (7 b) . 10 b 10 9 (6) 7 (6) b 10b 90 42 (6b) . 10b 90 42 (6b) . 10b 90 42 6b . 16b 48 . (b² 4) (3 6b²) 1 (b² 4) (1) (3 6b²) . 1 b²
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