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seulement la question 35 svp jy arrive pas nv 1erstmg
merci a tousss
seulement la question 35 svp jy arrive pas nv 1erstmg
merci a tousss
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Bonsoir,
-2x²+23x = 30
-2x²-23x-30 = 0
-2x²-23x+30 = 0
2x²-3x-20x+30 = 0
x*(2x-3)-10(2x-3) = 0
(2x-3)*(x-10) = 0
2x-3 =0 x-10 = 0
x= 3/2 x =10
x₁ = 3/2 , x₂ = 10 ou x₁ =1,5 , x₂ =10