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Alexandrinedin
@Alexandrinedin
April 2019
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SVP aidez moi a faire cette exercice
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Développement de chaque expression:
G= 3 (2x -1) + (x+3) (x+2)
G= 6x -3 + x² + 2x +3x + 6
G= x² + 11x +3
H= (4x +3) (5x -2) - (x-7) (2x+9)
H= 20x² -8x +15x -6 - ( 2x² +9x -14x - 63)
H= 20x² +7x -6 -2x² +5x +63
H= 18x² +12x +57
I= (x+3) (x-7) - (2x-5) (-x+4)
I= x² -7x +3x -21 - (-2x² +8x +5x -20)
I= x² -4x -21 +2x² -13x +20
I= 3x²-17x -1
Voilà ! J'espère t'avoir aidé(e) ! :)
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G= 3 (2x -1) + (x+3) (x+2)
G= 6x -3 + x² + 2x +3x + 6
G= x² + 11x +3
H= (4x +3) (5x -2) - (x-7) (2x+9)
H= 20x² -8x +15x -6 - ( 2x² +9x -14x - 63)
H= 20x² +7x -6 -2x² +5x +63
H= 18x² +12x +57
I= (x+3) (x-7) - (2x-5) (-x+4)
I= x² -7x +3x -21 - (-2x² +8x +5x -20)
I= x² -4x -21 +2x² -13x +20
I= 3x²-17x -1
Voilà ! J'espère t'avoir aidé(e) ! :)