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Sagot :

AYUDA

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

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