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Loriie
@Loriie
June 2021
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Bonjour.Urgent! est ce que quelqu'un pourrait m'écrire les vérifications de ces calculs svp.
1) 5(x+2)=6(2x-7)
5x+10=12x-42
-7x=-52
x=52/7
2) -3(3-x)=4(3x-6)
3x-9=12x-24
-9x=-15
x=5/3
3) 4x(x-2)=4x(au carré)+6x-8
4x²-8x=4x²+6x-8
-14x=-8
x=4/7
4) (5x+2)(4x-3)=20x(au carré)-6x+40
20x²-7x-6=20x²-6x+40
-x=46
x=-46
5) (4-3x)(5x+8)=38-15x(au carré)
-15x²-4x+32=-15x²+38
-4x=6
x=-3/2
MERCI D'AVANCE A LA PERSONNE QUI POURRA M'AIDER
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