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Sxmdzdz
@Sxmdzdz
May 2019
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Pourriez-Vous M'aider SVP.
5) Ecrire sans parenthèse chaque expression.
a. - (3 + ixe)
b. - (2a + 4)
c. - (-3 + ixe)
d. -(5 - ixe)
e. - (7 - 2y)
f. - ( -6 - 4ixe)
Pour Les exercices 16 à 18.
Supprimer les parenthèse, plus réduire chaque expression.
16) a. 25 - (2a - 3)
b. 3a - (-2a + 7)
c. - (a + 3b) + (b - 2a)
d. (5 + ixe) - (7ixe - 5)
17) a. (ixe2 - 5ixe) + (2ixe2 + 7ixe - 8)
b. (3ixe2 - 5ixe - 4) - (-4ixe2 + 7ixe + 5)
18)
a. - (ixe - 8) + (6ixe - 1) - (7 - ixe)
b. ( 3a2 + 5a - 4) - (8a2 + 3a + 3
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loulakar
Verified answer
Bonjour,
5) sans les parenthèses :
a) -3 - x
b) -2a - 4
c) 3 - x
d) -5 + x
e) -7 + 2y
f) 6 + 4x
16) réduire :
a) 25 - 2a + 3 = -2a + 28
b) 3a + 2a - 7 = 5a - 7
c) -a - 3b + b - 2a = -3a - 2b
d) 5 + x - 7x + 5 = -6x + 10
17) a) x^2 - 5x + 2x^2 + 7x - 8 = 3x^2 + 2x - 8
b) 3x^2 - 5x - 4 + 4x^2 - 7x - 5 = 7x^2 - 12x - 9
18) a) -x + 8 + 6x - 1 - 7 + x = 6x
b) 3a^2 + 5a - 4 - 8a^2 - 3a - 3 = -5a^2 + 2a - 7
1 votes
Thanks 1
telephone16
Verified answer
- (3 + ixe) = -3 -ixe
- (2a + 4) = -2a -4
- (-3 + ixe) = +3 -ixe
-(5 - ixe) = -5 +ixe
- (7 - 2y) = -7 +2y
- ( -6 - 4ixe) = +6 + 4 ixe
Exercice 16
25 - (2a - 3)
25 -2a +3 = 28 -2a
3a - (-2a + 7)
3a +2a -7
5a -7
-(a + 3b) + (b - 2a)
-a -3b +b -2a
-3a -2b
(5 + ixe) - (7ixe - 5)
5 + ixe -7ixe +5
+10 -6ixe
Exercice 17
(ixe² - 5ixe) + (2ixe²+ 7ixe - 8)
ixe² -5 ixe + 2 ixe² + 7ixe -8
3 ixe² +2 ixe -8
(3ixe² - 5ixe - 4) - (-4ixe² + 7ixe + 5)
3 ixe² -5 ixe -4 + 4 ixe² -7 ixe -5
7 ixe² -12 ixe -9
Exercice 18
- (ixe - 8) + (6 ixe - 1) - (7 - ixe)
- ixe +8 + 6ixe -1 -7 + ixe
+ 6 ixe
( 3a² + 5a - 4) - (8a² + 3a + 3)
3a² +5a -4 -8a² -3a -3
-5a² +2a -7
0 votes
Thanks 1
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Verified answer
Bonjour,5) sans les parenthèses :
a) -3 - x
b) -2a - 4
c) 3 - x
d) -5 + x
e) -7 + 2y
f) 6 + 4x
16) réduire :
a) 25 - 2a + 3 = -2a + 28
b) 3a + 2a - 7 = 5a - 7
c) -a - 3b + b - 2a = -3a - 2b
d) 5 + x - 7x + 5 = -6x + 10
17) a) x^2 - 5x + 2x^2 + 7x - 8 = 3x^2 + 2x - 8
b) 3x^2 - 5x - 4 + 4x^2 - 7x - 5 = 7x^2 - 12x - 9
18) a) -x + 8 + 6x - 1 - 7 + x = 6x
b) 3a^2 + 5a - 4 - 8a^2 - 3a - 3 = -5a^2 + 2a - 7
Verified answer
- (3 + ixe) = -3 -ixe- (2a + 4) = -2a -4
- (-3 + ixe) = +3 -ixe
-(5 - ixe) = -5 +ixe
- (7 - 2y) = -7 +2y
- ( -6 - 4ixe) = +6 + 4 ixe
Exercice 16
25 - (2a - 3)
25 -2a +3 = 28 -2a
3a - (-2a + 7)
3a +2a -7
5a -7
-(a + 3b) + (b - 2a)
-a -3b +b -2a
-3a -2b
(5 + ixe) - (7ixe - 5)
5 + ixe -7ixe +5
+10 -6ixe
Exercice 17
(ixe² - 5ixe) + (2ixe²+ 7ixe - 8)
ixe² -5 ixe + 2 ixe² + 7ixe -8
3 ixe² +2 ixe -8
(3ixe² - 5ixe - 4) - (-4ixe² + 7ixe + 5)
3 ixe² -5 ixe -4 + 4 ixe² -7 ixe -5
7 ixe² -12 ixe -9
Exercice 18
- (ixe - 8) + (6 ixe - 1) - (7 - ixe)
- ixe +8 + 6ixe -1 -7 + ixe
+ 6 ixe
( 3a² + 5a - 4) - (8a² + 3a + 3)
3a² +5a -4 -8a² -3a -3
-5a² +2a -7