x*(1+25%)+6*x怎么算
(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?
(25/X)X(30/X)= 15/X怎么算
x+(20%+x)+(1+20%)x+(1+20%)x.25=3700 怎么算啊
(-x+2x²+5)+(4x²-3-6x)怎么算?
(2x+1)²-(x+3)(3-x)=6x怎么简便算?
x²+2x-6/x²+2x=1怎么算
2(x的平方-3x+1)-(3x-3-x的平方)怎么算?
lim (e^1/x-e^-1/x)/(e^1/x+e^-1/x) x趋向0+ 怎么算
1-25%)x-4=2/3×x 怎么算
1/ X(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18请问这个方程式怎么
x-1/10-110=x/6怎么算
(x的平方+3x+1)+1怎么算?