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laadidi
@laadidi
June 2021
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help please aidez moi svp 4 eme calcul litterale devoir maison 166 et 167
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winner123
Verified answer
Bonjour
a = - 30 x²
b = 14 ab
pour x = - 2, A = - 120
pour a = - 2 et b = - 1 B = 28
2) c = 2 ( 4 + x)
d = 3 ( x² + 1)
e = 2 a ( b + 2 )
pour x = 1
C = ( 8 + 2) = 10
C = 2 x 5 = 10
pour x = 1
d = 3( 1 +1) = 3 x 2 = 6
d = 3 + 3 = 6
pour a = 2 et b = 3
e = 2 ( 6) + 4 ( 2) = 12 + 8 = 20
e = 4 ( 3 +2) = 4 x 5 = 20
167
a = - 2 + 2 x²
b = 9 x² + 6 x +1
c = 2 x² - x + 6 x - 3 = 2 x² + 5 x - 3
d = 6 x² - 36 x - x + 6 = 6 x² - 37 + 6
pour x = 1
a = - 2( 1 - 1²) = - 2
a = - 2 + 0 = - 2
b = (3 + 1)² = 4 ² = 16
b = 9 + 6 + 1 = 16
c = (1 + 3) ( 2 -1) = 4 x 1 = 4
c = 2 - 1 + 6 - 3 = 4
d = (6 - 1) ( 1 -6) = 5 x - 5 = -25
d = 6 - 37 + 6 = - 25
3) B- C
( 3 x + 1) ² - ( x +3) ( 2 x - 1)
9 x² + 6 x +1 - (2 x² - x + 6 x - 3)
9 x² + 6 x + 1 - 2 x² + x - 6 x +3
7 x²+ x + 4
A - b + c - d
- 2( 1 - x²) - ( 3 x + 1)² + (x +3) ( 2 x +1) - ( 6 x -1) ( x -6)
= - 2 - 2 x² - (9 x² + 6 x + 1) + ( 2 x² + x + 6 x + 3) - ( 6 x² - 36 x - x + 6)
=- 2 - 2 x² - 9 x² - 6 x - 1 + 2 x² + 7 x +3 - 6 x² +37 x - 6
= - 15 x² + 38 x - 6
Vérifies quand même les calculs car ce fût long !
2 votes
Thanks 1
laadidi
super merci vraiment
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help please tres urgent merci a celui qui m aidera question: EN QUOI LA POESIE EST T ELLE DIFFERENTE DES AUTRE GENRES , EN UNE PAGE !!!!! SVP PLEASE
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Verified answer
Bonjoura = - 30 x²
b = 14 ab
pour x = - 2, A = - 120
pour a = - 2 et b = - 1 B = 28
2) c = 2 ( 4 + x)
d = 3 ( x² + 1)
e = 2 a ( b + 2 )
pour x = 1
C = ( 8 + 2) = 10
C = 2 x 5 = 10
pour x = 1
d = 3( 1 +1) = 3 x 2 = 6
d = 3 + 3 = 6
pour a = 2 et b = 3
e = 2 ( 6) + 4 ( 2) = 12 + 8 = 20
e = 4 ( 3 +2) = 4 x 5 = 20
167
a = - 2 + 2 x²
b = 9 x² + 6 x +1
c = 2 x² - x + 6 x - 3 = 2 x² + 5 x - 3
d = 6 x² - 36 x - x + 6 = 6 x² - 37 + 6
pour x = 1
a = - 2( 1 - 1²) = - 2
a = - 2 + 0 = - 2
b = (3 + 1)² = 4 ² = 16
b = 9 + 6 + 1 = 16
c = (1 + 3) ( 2 -1) = 4 x 1 = 4
c = 2 - 1 + 6 - 3 = 4
d = (6 - 1) ( 1 -6) = 5 x - 5 = -25
d = 6 - 37 + 6 = - 25
3) B- C
( 3 x + 1) ² - ( x +3) ( 2 x - 1)
9 x² + 6 x +1 - (2 x² - x + 6 x - 3)
9 x² + 6 x + 1 - 2 x² + x - 6 x +3
7 x²+ x + 4
A - b + c - d
- 2( 1 - x²) - ( 3 x + 1)² + (x +3) ( 2 x +1) - ( 6 x -1) ( x -6)
= - 2 - 2 x² - (9 x² + 6 x + 1) + ( 2 x² + x + 6 x + 3) - ( 6 x² - 36 x - x + 6)
=- 2 - 2 x² - 9 x² - 6 x - 1 + 2 x² + 7 x +3 - 6 x² +37 x - 6
= - 15 x² + 38 x - 6
Vérifies quand même les calculs car ce fût long !