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Lucky12
@Lucky12
January 2021
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Qui peut m'aider a cet exercice en math? merci a tous
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maudmarine
Verified answer
Bonsoir,
A = 3 (x - 2) (x + 5)
A = 3 (x² + 5x - 2x - 10)
A = 3x² + 15x - 6x - 30
A = 3x² + 9x - 30
B = - 2 (x + 3) (2x - 4)
B = - 2 (2x² - 4x + 6x - 12)
B = - 4x² + 8x - 12x + 24
B = - 4x² - 4x + 24
C = (2 - x²) (3 + x)
C = 6 + 2x - 3x² - x³
C = - x³ - 3x² + 2x + 6
D = 2 (x - 3)²
D = 2 (x² - 6x + 9)
D = 2x² - 12x + 18
1 votes
Thanks 0
Lucky12
merci a toi et pr ta rapidité :)
Lucky12
tu as reduis et développer?
maudmarine
développé, réduit et ordonné
Lucky12
merci vs etes super !
AM234
Bonsoir :
A = 3(x-2)(x+5) = (3x - 6)(x+5) = 3x² + 15x - 6x - 30 = 3x² + 9x - 30
B = -2 (x+3)(2x-4) = (-2x-6)(2x-4) = -4x²+8x-12x+24 = -4x²-4x+24
C = (2-x²)(3+x) = 6 + 2x - 3x² - x^3
D = 2(x-3)² = (2x - 6)² =(2x)² - 2*2x*6 + 6² = 4x² - 24x + 36
Bonne soirée :)
0 votes
Thanks 0
Lucky12
ah dsl et merci tu as reduis et developper?
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Verified answer
Bonsoir,A = 3 (x - 2) (x + 5)
A = 3 (x² + 5x - 2x - 10)
A = 3x² + 15x - 6x - 30
A = 3x² + 9x - 30
B = - 2 (x + 3) (2x - 4)
B = - 2 (2x² - 4x + 6x - 12)
B = - 4x² + 8x - 12x + 24
B = - 4x² - 4x + 24
C = (2 - x²) (3 + x)
C = 6 + 2x - 3x² - x³
C = - x³ - 3x² + 2x + 6
D = 2 (x - 3)²
D = 2 (x² - 6x + 9)
D = 2x² - 12x + 18
A = 3(x-2)(x+5) = (3x - 6)(x+5) = 3x² + 15x - 6x - 30 = 3x² + 9x - 30
B = -2 (x+3)(2x-4) = (-2x-6)(2x-4) = -4x²+8x-12x+24 = -4x²-4x+24
C = (2-x²)(3+x) = 6 + 2x - 3x² - x^3
D = 2(x-3)² = (2x - 6)² =(2x)² - 2*2x*6 + 6² = 4x² - 24x + 36
Bonne soirée :)