bonjour
1 ) ( x + 2) ( 6 x - 4 ) = 6 x² - 4 x + 12 x - 8 = 6 x² + 8 x - 8
2 ) ( 4 x + 4 ) ² = 16 x² + 32 x + 16
3 ) ( 16 x² - 100 ) = ( 4 x + 10 ) ( 4 x - 10 )
décomposition de 32 760
32 760 = 2 x 16 380
16 380 = 2 x 8 190
8 190 = 2 x 4 095
4 095 = 3 x 1 365
1 365 = 3 x 455
455 = 5 x 91
91 = 7 x 13
13 = 13 x 1
32 760 = 2 ³ x 3² x 5 x 7 x 13
61 425 = 3 x 20 475
20 475 = 3 x 6 825
6 825 = 3 x 2 275
2 275 = 5 x 455
455 = 5 x 91
91 = 7 x 13
13 = 13 x 1
décomposition = 3 ³ x 5² x 7 x 13
PGCD = 3 ² x 5 x 7 x 13 = 4 095
32 760 / 61 425 = 8 / 15
