(100一3x)÷2=8 x=几
52+2X=3X-1x是几
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?
3(x一1)一5(3x一2X)=8(x一8)+6
x(x-3)=(x-2)(x-6),x值为几?
几道微积分一,求极限lim x→÷∞ x一,求极限lim x→÷∞ x+2x/2x-3x+1二,求极限lim x→1 x
数学一题x+1分之x+2+x+7分之x+8=x+5分之x+6+x+3分之x+4
2(x-2)-3(3x+2)=x+6怎么做 X=几?
(5x一12)x8=24 (100-3x)÷2=8
x/(x-3)-2/(x+3)=1【x等于几
2X+3X=12×3X,X等于几
以知x+x-1次方=3则x平方+x-2次方等于几