5X(X-2.7)=6.5
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
解下列方程.7(5x-3)=10.5 6.5x-x=7.7 4x+x=15
初一数学x*x+2x+5的值为7,请求3x*x+6x+3的值.因为x*x+2x2x+3=3x(x*x+2x)+2x+2x
(x-1)/x -(1-x)/(x+1)=(5x-5)/(2x+2) x等于多少
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8