25 + 5/8 x - 4 = 80% x怎么解

x^2+2x-8/x^3+25x+x/(x-2/x-x+4/x+1,其中x=-4/5 解方程：（2x+5)(4x*x-10x+25)=8x(x*x+1) matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 4（x+5）+8x=80x=? 解x-2/5x+8=80%x-4 x-2x+3x-4x+5x.+99x-100x=25求解 4(x+5)+8x=80 5*4x+x*x=80 x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? 25 + 5/8 x - 4 = 80% x怎么解 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 初二分式方程1、1/(x+4)-1/(x+7)=1/(x+3)-1/(x+6)2、(x-4)/(x-5)-(x-7)/(x-8)=(x-5)/(x+6)-(x-8)/(x-9)3、[(x^2)+x-3]/[(x^2)+x-2]+1=[2(x^2)+4x+1]/[(x^2)+2x+1]4、6/[(x^2)-25]=3/[(x^2)+8x+15]+5/[(x^2)-2x-15]5、(x+2)/(x+1)-(x+4)/(x+3)=(x+6)/(x+7)-(x [1].x-16.4=80 [2]28-2x=13 [3]3x+2x=25 [4]32-2x=30 [5] [x+5]*8=320 [6]x-2分之1x=2 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 4x-5=25-9x+x 求x? [1].x-16.4=80 [2]28-2x=13 [3]3x+2x=25 [4]32-2x=30 [5] [x+5]*8=320 [6]x-2分之1x=2[1].x-16.4=80 [2]28-2x=13 [3]3x+2x=25 [4]32-2x=30 [5] [x+5]*8=320 [6]x-2分之1x=2