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florentdai
@florentdai
June 2021
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C'est pour lundi !!! SVP
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winner123
Verified answer
Bonsoir
Aire de ABCD = (3x-5)(2x+1) = 6x² +3x -10x -5 =
6x² -7x -5
Aire du grand carré = (3x-7)(3x-7) = 9x² - 21x - 21x +49 =
9x² -42x +49
Aire du petit carré = 2² = 4
Aire du polygone = 9x² - 42x +49 - 4 =
9x² -42x + 45
2 votes
Thanks 1
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Verified answer
BonsoirAire de ABCD = (3x-5)(2x+1) = 6x² +3x -10x -5 = 6x² -7x -5
Aire du grand carré = (3x-7)(3x-7) = 9x² - 21x - 21x +49 = 9x² -42x +49
Aire du petit carré = 2² = 4
Aire du polygone = 9x² - 42x +49 - 4 = 9x² -42x + 45