100-7.32÷2.4x2.8 ,8.5+1.52÷0.5-2.6 可以简便的简便

100-7.32÷2.4x2.8 ,8.5+1.52÷0.5-2.6 可以简便的简便 一100-7.32÷2.4x2.8 二8.5+1.52÷0.5-2.6 可以简便的简便 若 x2-3x+1=0,求（2x2×x3-5x2×x2+2 x3-8x2 ）÷（x2+1 ）的值 能简便的简便 40.35÷[43.2x2-59.5] 130.5-[10.2-5.2] 2.4x1.5+7.6x2分之3 1.5x2.5x0.8+4.5 9-2+8-6x2÷5 (100-X)X2-8=X （4.8x7.5x8.1)÷(2.4x2.5x2.7)怎么简便计算 因式分解(x2-x)(x2-x-8)+12 不等式(x2-4x-5)(x2-8) x2-9x+8 x2-5x+8 x2+4x+8 解方程：X2--1/8(X2+2X)+X2+2X/3(X2--1)=11 (一56又8分之7)÷7x2 x2-4x+4分之x+8 -2-x分之1 ÷ x2-2x 分之x+3 在LINGO中如何将整数输入min 100x1+100x2+40y1+40y2+40y3+40y4+40y5stx1+x2+y1>=4x1+x2+y1+y2>=3x1+x2+y1+y2+y3>=4x2+y1+y2+y3+y4>=6x1+y2+y3+y4+y5>=5x1+x2+y3+y4+y5>=6x1+x2+y4+y5>=8x1+x2+y5>=8y1+y2+y3+y4+y5 LP模型：max 50x1 +80x2 +30x3 +40x4 +15x5s.t.500x1 +1000x2 +100x3 +300x4 +80x5 ≤20 000x1 + x2 ≥8x3 + x4 ≥15500x1+ 1000x2 ≤12 000x1 ≤16,x2≤10,x3≤24,x4≤4,x5≤25,x1,x2,…,x5 ≥0.max z=50x1 +80x2 +70x3,s.t.12x1 +7x2 +8x3 ≤ 80002x1 计算：(xy-x2)÷xy分之x2-2xy+y2