4道不等式.快.1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-42.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)4.x(x-3)
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4道不等式.快.1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-42.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)3.(x-6)(x-9)-(x-7)(x+1)
4道不等式.快.1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-42.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)4.x(x-3)
4道不等式.快.
1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-4
2.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)
3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)
4.x(x-3)
4道不等式.快.1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-42.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)4.x(x-3)
1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-4
x^2-3x+2-x^2-5x+6-2x^2+14x-24≤4
6x≤20
x≤10/3
2.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)
x^2-15x+54-x^2+8x-7>14x-35
-7x+47>14x-35
21x<82
x<82/21
3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)
x^2-15x+54-x^2+6x+7≤14x-35
-9x+61≤14x-35
23x≥96
x≥96/23
4.x(x-3)<3x(x+2)-2x^2-3
x^2-3x<3x^2+6x-2x^2-3
-3x<6x-3
9x>3
x>1/3
4道不等式.快.1.(x-1)(x-2)+(x-2)(x-3)-2(x-3)(x-4)≤-42.(x-6)(x-9)-(x-7)(x-1)>7(2x-5)3.(x-6)(x-9)-(x-7)(x+1)≤7(2x-5)4.x(x-3)
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