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Hedithekiller
@Hedithekiller
May 2019
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Svp aidez moi je n arrive pas a le faire svp
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Bonjour
on pose DM = x
aire de BCM = [12 ( 30 - x) ]/ 2 = (360 - 12 x ) / 2 =
180 - 6 x
aire de ADM = 12 x / 2 = 6 x
6 x = ( 180 - 6 x) /3
18 x = 180 - 6 x
18 x + 6 x = 180
24 x = 180
x = 7.5
DM doit faire 7.5 cm
programme
1
3*1 = 3
3-2 = 1
1²= 1
1 -16 = - 15
- 15
- 1/3
3( -1/3)= -3/3 = -1
-1 - 2 = -3
- 3² = - 9
- 9 - 16 = - 25
- 25
pour obtenir un résultat nul
x
3 x
3 x - 2
( 3 x - 2)²
( 3 x - 2) ² - 16
( 3 x - 2 - 4) ( 3 x - 2 + 4) = 0
( 3 x - 6) ( 3 x + 2) = 0
donc x = 6/3 = 2 ou x = - 2/3
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Svp aidez moi je n arrive pas a le faire svp
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Lista de comentários
on pose DM = x
aire de BCM = [12 ( 30 - x) ]/ 2 = (360 - 12 x ) / 2 = 180 - 6 x
aire de ADM = 12 x / 2 = 6 x
6 x = ( 180 - 6 x) /3
18 x = 180 - 6 x
18 x + 6 x = 180
24 x = 180
x = 7.5
DM doit faire 7.5 cm
programme
1
3*1 = 3
3-2 = 1
1²= 1
1 -16 = - 15
- 15
- 1/3
3( -1/3)= -3/3 = -1
-1 - 2 = -3
- 3² = - 9
- 9 - 16 = - 25
- 25
pour obtenir un résultat nul
x
3 x
3 x - 2
( 3 x - 2)²
( 3 x - 2) ² - 16
( 3 x - 2 - 4) ( 3 x - 2 + 4) = 0
( 3 x - 6) ( 3 x + 2) = 0
donc x = 6/3 = 2 ou x = - 2/3