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Louloujeanne
@Louloujeanne
May 2019
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Salut,
j'ai énormément besoin de vous .
merci d'avance <3
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aymanemaysae
Verified answer
Bonjour ;
A = 3 x (1/2)^3 = 3 x (1/2^3) = 3 x 1/8 = 3/8 = 0,375 .
B = 5 x (- 3/4)² = 5 x ((- 3)²/4²) = 5 x (9/16) = (5 x 9)/16 = 45/16 = 2,8125 .
C = 2/3 x (3/2)^3 = 2/3 x ((3^3)/2^3) = 2/3 x 27/8 = (2 x 27)/(3 x 8) = 54/24
= 27/12 = 2,25 .
D = - 5/2 x (- 4/5)² = - 5/2 x ((- 4)²/5²) = - 5/2 x (16/25) = - (5 x 16)/(2 x 25)
= - 80/50 = - 8/5 = - 1,6 .
E = - 7/3 x (- 2/3)^(-2) = - 7/3 x (- 3/2)² = - 7/3 x ((-3)²/2²) = - 7/3 x 9/4
= - (7 x 9)/(3 x 4) = - 63/12 = - 21/4 = - 5,25 .
1 votes
Thanks 1
louloujeanne
merci beaucoup!!!!!
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Lista de comentários
Verified answer
Bonjour ;A = 3 x (1/2)^3 = 3 x (1/2^3) = 3 x 1/8 = 3/8 = 0,375 .
B = 5 x (- 3/4)² = 5 x ((- 3)²/4²) = 5 x (9/16) = (5 x 9)/16 = 45/16 = 2,8125 .
C = 2/3 x (3/2)^3 = 2/3 x ((3^3)/2^3) = 2/3 x 27/8 = (2 x 27)/(3 x 8) = 54/24
= 27/12 = 2,25 .
D = - 5/2 x (- 4/5)² = - 5/2 x ((- 4)²/5²) = - 5/2 x (16/25) = - (5 x 16)/(2 x 25)
= - 80/50 = - 8/5 = - 1,6 .
E = - 7/3 x (- 2/3)^(-2) = - 7/3 x (- 3/2)² = - 7/3 x ((-3)²/2²) = - 7/3 x 9/4
= - (7 x 9)/(3 x 4) = - 63/12 = - 21/4 = - 5,25 .