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Laura1301
@Laura1301
April 2019
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1) développer puis réduire (x-6)²-(x-4)(x-9)2)
a. Sans utiliser de calculatrice, donner le résultat de 124124124118²-24124124120 * 124124124115
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soniaharnafi
Voilà pour le 1 X ocarre -6x -6x +36 (-x+4)(-x+9)-2 X ocarre -12x + 36 -4x -9x -2 X ocarre -28x + 34 Voilà j'espère t'avoir aidé
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soniaharnafi
Je pense que je me suis trompé dsl
manamanou123
Bonjour
1) (x-6)²-(x-4)(x-9)2
=x²-2*x*6+6²-[(2x-8)(2x-18)]
=x²-12x+36-(4x²-36x-16x+144)
=x²-12x+36-4x²+36x+16x-144
=-3x²+40x-108
a) je ne pas compris
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1) (x-6)²-(x-4)(x-9)2
=x²-2*x*6+6²-[(2x-8)(2x-18)]
=x²-12x+36-(4x²-36x-16x+144)
=x²-12x+36-4x²+36x+16x-144
=-3x²+40x-108
a) je ne pas compris