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victo06
@victo06
June 2021
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Calculer, à la main et en détaillant les étapes de calcul, le carré des nombres :
a) 17
b) 32
c) 52*48
Aidez moi j'y arrive vraiment pas.
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danielwenin
Verified answer
17² = (15 + 2)² = 225 + 60 + 2 = 287
32² = (30 + 2)² = 900 + 120 + 4 = 1024
52*48 = (50 + 2)(50 - 2) = 2500 - 4 = 2496
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Verified answer
17² = (15 + 2)² = 225 + 60 + 2 = 28732² = (30 + 2)² = 900 + 120 + 4 = 1024
52*48 = (50 + 2)(50 - 2) = 2500 - 4 = 2496