(2-×)(4-3×)≥9×-3×-7怎么做,
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(2-×)(4-3×)≥9×-3×-7怎么做,(2-×)(4-3×)≥9×-3×-7怎么做,(2-×)(4-3×)≥9×-3×-7怎么做,
(2-×)(4-3×)≥9×-3×-7怎么做,
(2-×)(4-3×)≥9×-3×-7怎么做,
(2-×)(4-3×)≥9×-3×-7怎么做,
(2-×)(4-3×)≥9×-3×-7怎么做,
2/3*(-9/7)*-24*(+7/4)
5-x/3≥31/2-2x+1/45-(x/3)≥(7/2)-(2x+1)/4
2/9:7/9=3/4:(4-x)
利用数轴,解下列一元一次不等式组2x 40(2).3x+14/4>2x-9,4x+6≥3x+7
求不等式组7-x/2≥3+4x/5-4,5/3x+5(4-x)≥2(4-x)
解不等式(x^2-4x+1)/(3x^2-7x+2)≥1
(1-3/2*4)*(1-3/3*5)*...*(1-3/7*9)
3-2(4x-1)≥5-4x2x+9/3-2(x-3)<5
解不等式 (-3x^2 -7x+14)/(x^2+3x-4)≥-2要答题过程
已知3(2x+1)≥2(4x+1)+7,化简|-x-2|-2|5x+4|
3x+2>2x-2 8x-2≤7x+3 3(x-1)<2(x+9) 2(4x+3)≤3(2x+5) 5x-3≥2x 2(x+2)≤x+3解不等式3x+2>2x-28x-2≤7x+33(x-1)<2(x+9)2(4x+3)≤3(2x+5)5x-3≥2x2(x+2)≤x+3
解方程组:{14-7x≤9-2x,11-3x≥2(x-2);{2x+5≤7(2-x),4+x/3-1<x/2.
设随机变量X~N(0,4/9),若P(X≥2/3)=?
求解不等式(3)4-x²≤0(4)4+3x-2x²≥0(5)9x²-12x-4(6)4x²+4x+1≥0(7)x²-6x+9≤0
[(11+1/4+1/7)-(12+2/3+2/9)]/[(11-3/4-3/7)-(12-2/3-2/9)]这个算式得多少
1/2x+1>-3 -2x-4<4x+4 2x+1>3 2-x<1 2(x+1)<3x 3(2x+2)≥4(x-1)+7 x/2+1>x 2/3x≤1/3(x-2)3(x+1)<4(x-2)-3 1/6(1-9x)<-7-3/2x解不等式(1)1/2x+1>-3 (2)-2x-4<4x+4 (3)2x+1>3 (4)2-x<1 (5)2(
解下列不等式(1)4x^2+4x+1≥0;(2)(x-3)(x-4)<-1.(3)-x^2-6x-9≥0;(4)x^2-4x+4>0.