1. a) 45 = 3x3x5 —-> 3au carré x 5
b) 65 = 5x13
c) 34 = 2x17
d) 48 = 6x8 —> (2x3)x(2x2x2) —> 2x2x2x2x3
2. a) 56 = 2x2x2x7 —> 2aucube x 7
b)42 = 2x3x7
c)93 = 3x31
d) 110 = 2x5x11
3. a) 550 = 2x5x5x11 —> 2x 5 au carré x 11
b) 320 = 2x2x2x2x2x2x5 —> 2 puissance 6 x 5
c) 425 = 5au carré x 17
d) 1000 = 2x2x2x5x5x5 —-> 2 au cube x 5 au cube
