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Published byLaurent René Modified over 9 years ago
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5² - 3² =
2
13² - 12² =
3
7² - 4² =
4
12² - 6² =
5
15² - 11² =
6
CORRECTION
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5² - 3² = 5² - 3² = 25 - 9 = 16 ou 5² - 3² = (5 - 3)(5 + 3) = 2 x 8 = 16
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13² - 12² = 13² - 12² = 169 - 144 = 25 ou 13² - 12² = (13 - 12)(13 + 12) = 1 x 25 = 25
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7² - 4² = 7² - 4² = 49 - 16 = 33 ou 7² - 4² = (7 - 4)(7 + 4) = 3 x 11 = 33
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12² - 6² = 12² - 6² = 144 - 36 = 108 ou 12² - 6² = (12 - 6)(12 + 6) = 6 x 18 = 108
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15² - 11² = 15² - 11² = 225 - 121 = 104 ou 15² - 11² = (15 - 11)(15 + 11) = 4 x 26 = 104 Fermer le diaporama
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