x=5×6-(6+7+5+6+1),=30-25,=5;
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6
x-1\x-2+x-6\x-7=x-2\x-3+x-5\x-6 分式方程
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
3/x-1=4/x 6/x+1=x+5/x(x+1)
1x+2x+3x+4x+5x+6x+7x…+99x=100
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?