Tìm x biết
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Bài 8: Tìm x biết
1) \((x-2)\cdot(x+3)-x\cdot(x-2)=3\)
2) \((x-3)\cdot(x+4)-x\cdot(x-2)=0\)
3) \((2x-1)\cdot(x+1)-x\cdot(2x+3)+1=0\)
4) \((x-1)\cdot(2x+3)-2x\cdot(x-1)=0\)
5) \((x-3)\cdot(x-2)-(x+1)\cdot(x-5)=0\)
6) \((x+2)\cdot(x+3)-(x-2)\cdot(x+5)=0\)
7) \((2x-1)\cdot(3x-1)-(2x-3)\cdot(3x-1)=0\)
8) \((x-5)\cdot(-x+4)-(x-1)\cdot(x+3)=-2x^2\)