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Fatimaz
@Fatimaz
May 2019
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Bonjour ,pouvez vous m'aider svp "3(1-x)-2x(x-1)=0 et 100xau carré-121=0
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lerouvilloisle
Verified answer
3(1-x) - 2x ( x-1) = 0
3(1-x) - 2x = 0 ou (x-1) = 0
= 3- 3x -2 = 0 ou x - 1 = 0
= -3x - 2x -3 ou x = 1
= -5x = -3
= x = -3/-5
= x = 0.6
=
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ggdu19
Bonsoir,
100x²-121=0 <=> (10x+11)(10x-11)=0
<=> 10x+11=0 ou 10x-11=0
<=> 10x=-11 ou 10x=11
<=> x=-11/10 ou x=11/10
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Verified answer
3(1-x) - 2x ( x-1) = 03(1-x) - 2x = 0 ou (x-1) = 0
= 3- 3x -2 = 0 ou x - 1 = 0
= -3x - 2x -3 ou x = 1
= -5x = -3
= x = -3/-5
= x = 0.6
=
100x²-121=0 <=> (10x+11)(10x-11)=0
<=> 10x+11=0 ou 10x-11=0
<=> 10x=-11 ou 10x=11
<=> x=-11/10 ou x=11/10