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Ladyleia
@Ladyleia
April 2019
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Bonjour j ai besoin d aide svp :)
sans la calclatrice, calculer A=105 au carré; B=98 au carré et C=998x1002
ecrire vos calculs.
merci d avance :)
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winner123
Verified answer
Bonsoir
105² = ( 100 + 5)² = 10 000 + 1 000 + 25 = 11 025
98² = ( 100 - 2)² = 10 000 - 400 + 4 = 9 604
998 x 1002 = ( 1 000 - 2) ( 1000 + 2 ) = 1000² - 4 = 999 996
1 votes
Thanks 1
ladyleia
encore merci ! :D
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Verified answer
Bonsoir105² = ( 100 + 5)² = 10 000 + 1 000 + 25 = 11 025
98² = ( 100 - 2)² = 10 000 - 400 + 4 = 9 604
998 x 1002 = ( 1 000 - 2) ( 1000 + 2 ) = 1000² - 4 = 999 996