Sagot :
70 = 2x35 = 2x5x7
126 = 2x63 = 2x9x7 = 2x3x3x7
210 = 21x10 = 3x7x2x5 = 2x3x5x7
et 450 = 45x10 = 5x9x5x2 = 2x3x3x5x5
Bonjour
70 = 7*10 = 2*5*7
126 = 3 * 43
210 = 3 * 70 = 2*3*5*7
450 = 45 * 10 = 9*5*2*5 = 2*3²5²
70 = 2x35 = 2x5x7
126 = 2x63 = 2x9x7 = 2x3x3x7
210 = 21x10 = 3x7x2x5 = 2x3x5x7
et 450 = 45x10 = 5x9x5x2 = 2x3x3x5x5
Bonjour
70 = 7*10 = 2*5*7
126 = 3 * 43
210 = 3 * 70 = 2*3*5*7
450 = 45 * 10 = 9*5*2*5 = 2*3²5²