simplifiier les expression si possible: A/A=5×b+3×5 B=0×a+1×b+c×d C=1×b+0×(a+b) D=1×(a+b)+0×a E=a×a×a+b×b F=c×e+d×d×d B/A=6x+x+5x B=7x-x+2x C=8x+3x-x-4+10 D=x+3+x+3 E=7x-6x+5+3 F=9x-9x+2+7 Que vaut x a)2(x+1)=5 b)5(4-x)=12
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