Aidezz moi please ! c'est urgent :/
resoudre ces equation en choisisant la methode appropriée:
1) 4(x-5)(2x+3)=0
2)(x-1)(2x+3)+4x(x-1)=0
resoudre ces equation en choisisant la methode appropriée:
1) 4(x-5)(2x+3)=0
2)(x-1)(2x+3)+4x(x-1)=0
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x+5 =0 2x+3 =0
x = -5 2x= -3
x = -3/2
2)(x-1)(2x+3)+4x(x-1)=0
(x-1)(2x+3+4x) =0
(x-1)(6x+3) =0
3(x-1)(2x+1) =0
x-1 =0 2x+1 =0
x = 1 2x =-1 donc x = -1/2