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SpyFox
@SpyFox
May 2019
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S'il vous plaît j'ai vraiment besoin d'aide je suis nul avec le calcul littéral de x et tout...
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trudelmichel
Verified answer
Bonjour,
si x=-3 -x²=-9
(4x-5)(2-3x)= 8x-10-12x²+15x= -12x²+23x-10
25x²-16=(5x)²-4²=(5x+4)(5x-4)
(7x-5)²=49x²-70x+25
4x²+3x=x(4x+3)
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Thanks 1
SpyFox
Merci beaucoup !!!!
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Svp aidez-moi c'est pour demain !!!!!!
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Bonjour pouvez-vous m'aider svp c'est tout simple mais je n'y arrive pas !!
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Verified answer
Bonjour,si x=-3 -x²=-9
(4x-5)(2-3x)= 8x-10-12x²+15x= -12x²+23x-10
25x²-16=(5x)²-4²=(5x+4)(5x-4)
(7x-5)²=49x²-70x+25
4x²+3x=x(4x+3)