数学化简3x-x^2/5x+4 x 18/4x-12(3x-x^2)/(5x+4) x 18/(4x-12)

数学化简3x-x^2/5x+4 x 18/4x-12(3x-x^2)/(5x+4) x 18/(4x-12) *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 数学(X+1)(X+2)(X+3)(X+4)-120 数学f(x)=x(x+1)(x+2)(x+3)(x+4)(x+5),求f'(0)=? 初一数学化简【x+2】【x-2】-5x【x-1】+【2x-1】^2 数学分式化简计算x+[1/(x-1)]+[(x^2-3x+4)/(1-x^2)] 小学六年级下册数学解方程.. 要详细的.. 还要过程 都写下来...2x+3x=60 3.6x-2.8x=12 100x-x=198 18x+2x+60 5x+6x=12.1 6.6x-5x=8 4x-x=24 1.5x-x=1 1.9x+0.4x=9.2 数学化简计算（x+1)(x-1)(x^2-x+1)(x^2+x+1) 数学-化简求值难题(1)化简求值:(X+2/X^2-2X - X-1/X^2-4X+4) ÷ X^2-16/X^2+4X,其中X=2+根号2.(2)化简求值:(3X/X+2 - X/X-2)+ 2X/X^2-4.其中X=4-根号5. 一道数学因式化简的问题求解释 f(x)=(1-x)(1+x)(x+3)(x+5) ①一道数学因式化简的问题求解释f(x)=(1-x)(1+x)(x+3)(x+5) ①=[3-(x+2)][3+(x+2)][(x+2)-1][(x+2)+1] ②=[9-(x+2) x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)化简之后等于多少 (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X x^5-x^4+x^3-x^2+x-1 数学题目(2x-5)(x+5)+(-3x-4)(3x+4)需过程(2x-5)(x+5)+(-3x-4)(3x+4) 数学因式分解题(3x^2-4x+5)(3x^2+4x-5) 数学题目(2x-5)(x 5) (-3x-4)(3x 4)