(X-3)+3=29X=?错了,是(X-3)+X=29
f(x)=x²+3x|x-2|
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!)+.
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
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)
解方程:6x(7-x)=36-2x(3x-5)x是字母x
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
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
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
x(x²+3)+x²(x-3)-3x(x²-x-1)=?
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,