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Nancy1001
@Nancy1001
January 2021
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Hey,
Quelqu'un pourrais m'aider pour l'exercice 2 et 3 ?
Merci beaucoup :)
ENONCE :
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calinizou
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Bonsoir
exercice 2
a/ 22x²+25x+4=(5x+2)²-3x²+5x
22x²+25x+4=25x²+20x+4-3x²+5x=
22x²+25x+4=22x²+25x+4
b/ (x+5)(3x-2)+(x+5)(5x-4)=(x+5)(8x-6)
3x²-2x+15x-10+5x²-4x+25x-20=8x²-6x+40x-30
8x²+34x-30=8x²+34x-30
exercice 3
a=(x-3)²+(x-3)(1-2x)
x²-6x+9+x-2x²-3+6x=
-x²+x+6
b (x-3)(-x-2)=
-x²-2x+3x+6=
-x²+x+6
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Nancy1001
merci beaucoup, bon week-end :)
calinizou
de rien à toi aussi
inequation
Verified answer
Bonsoir,
Le 2
22x²+25x+4= (5x+2)²-3x²+5x
22x²+25x+4= 25x²+20x+4-3x²+5x
22x²+25x+4= 22x²+25x+4
d) lorsque tu développes, tu obtiens
8x²+34x-30 = 8x²+34x-30
Le 3
Tu développes A, le mm procédé que l'exercice 2
Factoriser
A= (x-3)(x-3+1-2x)
A= (x-3)(-x-2)
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Thanks 0
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Nancy1001
January 2021 | 0 Respostas
Hey, Pourriez-vous m'aider aux 2 exercices suivants ? Merci !
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Lista de comentários
Verified answer
Bonsoirexercice 2
a/ 22x²+25x+4=(5x+2)²-3x²+5x
22x²+25x+4=25x²+20x+4-3x²+5x=
22x²+25x+4=22x²+25x+4
b/ (x+5)(3x-2)+(x+5)(5x-4)=(x+5)(8x-6)
3x²-2x+15x-10+5x²-4x+25x-20=8x²-6x+40x-30
8x²+34x-30=8x²+34x-30
exercice 3
a=(x-3)²+(x-3)(1-2x)
x²-6x+9+x-2x²-3+6x=
-x²+x+6
b (x-3)(-x-2)=
-x²-2x+3x+6=
-x²+x+6
Verified answer
Bonsoir,Le 2
22x²+25x+4= (5x+2)²-3x²+5x
22x²+25x+4= 25x²+20x+4-3x²+5x
22x²+25x+4= 22x²+25x+4
d) lorsque tu développes, tu obtiens
8x²+34x-30 = 8x²+34x-30
Le 3
Tu développes A, le mm procédé que l'exercice 2
Factoriser
A= (x-3)(x-3+1-2x)
A= (x-3)(-x-2)