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tayyib
@tayyib
June 2021
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pouvez vous m aidez pour mondevoir de mah urgent c'est pour demain
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Kaweem
Salut,
I.
Aire ABCD = AB x BC = (a + b) x k
Aire ABCD = Aire AEFD + Aire EBCF = AE x EF + EB x BC = (a x k) + (b x k)
(a + b) x k = (a x k) + (b x k)
II.
Aire ABCD = AB x BC = (a + b) (c + d)
Aire ABCD = Aire AEIH + Aire EBFI + Aire FCGI + Aire GDHI
= (a x c) + (c x b) + (b x d) + (a x d)
(a + c) (c + d) = (a x c) + (c x b) + (b x d) + (a x d).
III.
1. Pour 1:
1; 1²= 1 ; 1 + 3 = 4; 4 x -2 = -8 ; -8 + 1 =
-7
Pour 2
2; 2²= 4 ; 4 + 3 = 7; 7 x -2 = -14 ; -14 + 2=
- 12
Pour 1/2
1/2; (1/2)²= 0,25 ; 0,25 + 3 = 3,25 ; 3,25 x -2 = - 6,5; -6,5 + 1/2= - 6.
L'expression pour le calculer est:
y = (x² + 3) x (-2) + x
2. a.
y = x + 2
z = 5 x y
z = 5 (x + 2)
b.
z = 20
5 (x + 2) = 20
x + 2 = 20 / 5
x + 2 = 4
x = 4 - 2
x = 2
Pour z = 20 , x = 2.
c.
Si x = 1.
z = 5 (1 + 2) = 5 x 3 = 15
Si x = 1/3
z = 5 (1/3 + 2) = 5/3 + 10 = 5/3 + 30/3 = 35/3 ≈ 11,6
Si x = -2
z = 5 (-2 +2) = 5 x 0 = 0
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Thanks 1
tayyib
merci de m'avoir aidé tu mas sauvé
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Lista de comentários
I.
Aire ABCD = AB x BC = (a + b) x k
Aire ABCD = Aire AEFD + Aire EBCF = AE x EF + EB x BC = (a x k) + (b x k)
(a + b) x k = (a x k) + (b x k)
II.
Aire ABCD = AB x BC = (a + b) (c + d)
Aire ABCD = Aire AEIH + Aire EBFI + Aire FCGI + Aire GDHI
= (a x c) + (c x b) + (b x d) + (a x d)
(a + c) (c + d) = (a x c) + (c x b) + (b x d) + (a x d).
III.
1. Pour 1:
1; 1²= 1 ; 1 + 3 = 4; 4 x -2 = -8 ; -8 + 1 = -7
Pour 2
2; 2²= 4 ; 4 + 3 = 7; 7 x -2 = -14 ; -14 + 2= - 12
Pour 1/2
1/2; (1/2)²= 0,25 ; 0,25 + 3 = 3,25 ; 3,25 x -2 = - 6,5; -6,5 + 1/2= - 6.
L'expression pour le calculer est:
y = (x² + 3) x (-2) + x
2. a.
y = x + 2
z = 5 x y
z = 5 (x + 2)
b.
z = 20
5 (x + 2) = 20
x + 2 = 20 / 5
x + 2 = 4
x = 4 - 2
x = 2
Pour z = 20 , x = 2.
c.
Si x = 1.
z = 5 (1 + 2) = 5 x 3 = 15
Si x = 1/3
z = 5 (1/3 + 2) = 5/3 + 10 = 5/3 + 30/3 = 35/3 ≈ 11,6
Si x = -2
z = 5 (-2 +2) = 5 x 0 = 0