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Nb3rl
@Nb3rl
April 2019
2
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Svp aidez moi je dois developer puis réduire :
A= 3(x-2)+5(3-x)
B= x(3+x)-2(x+5)
C=-2(x-7)-2(x2+x)+4(x2+1)
D= 2x(-x+5)-x(1-x)
E=-6x(2-3x)-3(x+4x2)-x(-3+4x)
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maudmarine
Verified answer
Bonsoir,
A= 3(x-2)+5(3-x)
A = 3x - 6 + 15 - 5x
A = 3x - 5x - 6 + 15
A = - 2x + 9
B= x(3+x)-2(x+5)
B = 3x + x² - 2x - 10
B = x² + x - 10
C=-2(x-7)-2(x2+x)+4(x2+1)
C = - 2x + 14 - 2x² - 2x + 4x² + 4
C = - 2x² + 4x² - 2x - 2x + 14 + 4
C = 2x² - 4x + 18
D= 2x(-x+5)-x(1-x)
D = - 2x² - 10x - x + x²
D = - 2x² + x² - 10x - x
D = - x² - 11x
E=-6x(2-3x)-3(x+4x2)-x(-3+4x)
E = - 12x + 18x² - 3x - 12x² + 3x² - 4x²
E = 18x² - 12x² - 4x² + 3x² - 12x - 3x
E = 2x² - 15x
1 votes
Thanks 1
PAU64
A = 3 (x - 2) + 5 (3 - x)
A = 3 * x + 3 * (- 2) + 5 * 3 + 5 * (- x)
A = 3x - 6 + 15 - 5x
A = - 2x + 9
B = x (3 + x) - 2 (x + 5)
B = x * 3 + x * x - 2 * x - 2 * 5
B = 3x + x² - 2x - 10
B = x² + x - 10
C = - 2 (x - 7) - 2 (x² + x) + 4 (x² + 1)
C = - 2 * x - 2 * (- 7) - 2 * x² - 2 * x + 4 * x² + 4 * 1
C = - 2x + 14 - 2x² - 2x + 4x² + 4
C = 2x² - 4x + 18
D = 2x (- x + 5) - x (1 - x)
D = 2x * (- x) + 2x * 5 - x * 1 - x * (- x)
D = - 2x² + 10x - x + x²
D = - x² + 9x
E = - 6x (2 - 3x) - 3 (x + 4x²) - x (- 3 + 4x)
E = - 6x * 2 - 6x * (- 3x) - 3 * x - 3 * 4x² - x * (- 3) - x * 4x
E = - 12x + 18x² - 3x - 12x² + 3x² - 4x²
E = 5x² - 15x
Les * désignent "fois".
3 votes
Thanks 2
PAU64
de rien ;)
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Lista de comentários
Verified answer
Bonsoir,A= 3(x-2)+5(3-x)
A = 3x - 6 + 15 - 5x
A = 3x - 5x - 6 + 15
A = - 2x + 9
B= x(3+x)-2(x+5)
B = 3x + x² - 2x - 10
B = x² + x - 10
C=-2(x-7)-2(x2+x)+4(x2+1)
C = - 2x + 14 - 2x² - 2x + 4x² + 4
C = - 2x² + 4x² - 2x - 2x + 14 + 4
C = 2x² - 4x + 18
D= 2x(-x+5)-x(1-x)
D = - 2x² - 10x - x + x²
D = - 2x² + x² - 10x - x
D = - x² - 11x
E=-6x(2-3x)-3(x+4x2)-x(-3+4x)
E = - 12x + 18x² - 3x - 12x² + 3x² - 4x²
E = 18x² - 12x² - 4x² + 3x² - 12x - 3x
E = 2x² - 15x
A = 3 * x + 3 * (- 2) + 5 * 3 + 5 * (- x)
A = 3x - 6 + 15 - 5x
A = - 2x + 9
B = x (3 + x) - 2 (x + 5)
B = x * 3 + x * x - 2 * x - 2 * 5
B = 3x + x² - 2x - 10
B = x² + x - 10
C = - 2 (x - 7) - 2 (x² + x) + 4 (x² + 1)
C = - 2 * x - 2 * (- 7) - 2 * x² - 2 * x + 4 * x² + 4 * 1
C = - 2x + 14 - 2x² - 2x + 4x² + 4
C = 2x² - 4x + 18
D = 2x (- x + 5) - x (1 - x)
D = 2x * (- x) + 2x * 5 - x * 1 - x * (- x)
D = - 2x² + 10x - x + x²
D = - x² + 9x
E = - 6x (2 - 3x) - 3 (x + 4x²) - x (- 3 + 4x)
E = - 6x * 2 - 6x * (- 3x) - 3 * x - 3 * 4x² - x * (- 3) - x * 4x
E = - 12x + 18x² - 3x - 12x² + 3x² - 4x²
E = 5x² - 15x
Les * désignent "fois".