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themissdunord
@themissdunord
January 2021
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Bonjour à tous j ai fait la plus part de mes exercice de mon devoir maison de mathématiques mais je n arrive pas à faire le premier exercice la question à factoriser merci à ce qui m aiderons
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AhYan
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Bonsoir,
Exercice 1
a) A = (x-3)(x-3) - 2(x-3)
A = (x-3)(x-3-2)
A = (x-3)(x-5)
b) A = (x-3)(x-3) - 2(x-3)
A = x²-3x-3x+9 - 2x+6
A = x² - 8x + 15
c) Pour x = -1
A = (-1-3)(-1-5)
A = (-4) × (-6)
A = 24
Pour x = 0
A = 0² - 8×0 + 15
A = 15
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Verified answer
Bonsoir,Exercice 1
a) A = (x-3)(x-3) - 2(x-3)
A = (x-3)(x-3-2)
A = (x-3)(x-5)
b) A = (x-3)(x-3) - 2(x-3)
A = x²-3x-3x+9 - 2x+6
A = x² - 8x + 15
c) Pour x = -1
A = (-1-3)(-1-5)
A = (-4) × (-6)
A = 24
Pour x = 0
A = 0² - 8×0 + 15
A = 15