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Yassmine68
@Yassmine68
April 2019
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BONJOUR, C'EST URGENT, c'est pour demain, pouvez vous m'aider à faire mes exos de maths s'il vous plaît? Merci à ceux qui m'aideront
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esefiha
Exercice 15
a.
A = 5
x
+ 2
x
+ 10
x
B =
27
x² -
27
x +
27
C =
9x
(x-3) +
9x
(10+2x)
D =
(2x+1)
(8+x) - (3x-1)
(2x+1)
b.
A = 5x + 2x + 10x
A = x(5 + 2 + 10)
A = 17x
B = 27x² - 27x + 27
B = 27(x² - x + 1)
C = 9x(x-3) + 9x(10+2x)
C = 9x[(x-3) + (10+2x)]
C = 9x(3x+7)
D = (2x+1)(8+x) - (3x-1)(2x+1)
D = (2x+1)[(8+x) - (3x-1)]
D = (2x+1)(8+x-3x+1)
D = (2x+1)(9-2x)
Exercice 16
a.
E = 10x² - 5x + 15
E =
5
*2x² -
5
x +
5
*3
F = 4x² + 7x
F = 4x*
x
+ 7
x
(* signifie multiplié par)
G = 9x²(x+1) + 6x(5+x)
G =
3x
*3x(x+1)+
3x
*2(5+x)
H = (11x-3)² + (11x-3)(5+9x)
H =
(11x-3)
(11x-3) +
(11x-3)
(5+9x)
b.
E = 10x² - 5x + 15
E = 5*2x² - 5x + 5*3
E = 5(2x²-x+3)
F = 4x² + 7x
F = 4x*x + 7x
F = x(4x+7)
G = 9x²(x+1) + 6x(5+x)
G = 3x*3x(x+1) + 2*3x(5+x)
G = 3x[3x(x+1) + 2(5+x)]
G = 3x(3x²+3x + 10+2x)
G = 3x(3x²+5x+10)
H = (11x-3)² + (11x-3)(5+9x)
H = (11x-3)(11x-3) + (11x-3)(5+9x)
H = (11x-3)(11x-3+5+9x)
H = (11x-3)(20x+2)
H = 2(10x+1)(11x-3)
1 votes
Thanks 1
Yassmine68
Merci
esefiha
De rien :)
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Lista de comentários
a.
A = 5x + 2x + 10x
B = 27x² - 27x + 27
C = 9x(x-3) + 9x(10+2x)
D = (2x+1)(8+x) - (3x-1)(2x+1)
b.
A = 5x + 2x + 10x
A = x(5 + 2 + 10)
A = 17x
B = 27x² - 27x + 27
B = 27(x² - x + 1)
C = 9x(x-3) + 9x(10+2x)
C = 9x[(x-3) + (10+2x)]
C = 9x(3x+7)
D = (2x+1)(8+x) - (3x-1)(2x+1)
D = (2x+1)[(8+x) - (3x-1)]
D = (2x+1)(8+x-3x+1)
D = (2x+1)(9-2x)
Exercice 16
a.
E = 10x² - 5x + 15
E = 5*2x² - 5x + 5*3
F = 4x² + 7x
F = 4x*x + 7x (* signifie multiplié par)
G = 9x²(x+1) + 6x(5+x)
G = 3x*3x(x+1)+ 3x*2(5+x)
H = (11x-3)² + (11x-3)(5+9x)
H = (11x-3)(11x-3) + (11x-3)(5+9x)
b.
E = 10x² - 5x + 15
E = 5*2x² - 5x + 5*3
E = 5(2x²-x+3)
F = 4x² + 7x
F = 4x*x + 7x
F = x(4x+7)
G = 9x²(x+1) + 6x(5+x)
G = 3x*3x(x+1) + 2*3x(5+x)
G = 3x[3x(x+1) + 2(5+x)]
G = 3x(3x²+3x + 10+2x)
G = 3x(3x²+5x+10)
H = (11x-3)² + (11x-3)(5+9x)
H = (11x-3)(11x-3) + (11x-3)(5+9x)
H = (11x-3)(11x-3+5+9x)
H = (11x-3)(20x+2)
H = 2(10x+1)(11x-3)