3x-(5x-2x)怎么化简

3x-(5x-2x)怎么化简 （2x平方-9x+5）x（3x-1）怎么化简 ( -x^2 - 2x - 3) / (x + 3)怎么化简? (X^3+X^2-7)/(x-3)怎么化简? 4(3x+2)-5x怎么化简 如题,x^2表示x的2次方,后一个代数式怎么化简?x^2-3x+1=0,求2x^5-5x^4-x^3+x^2-6x/x^2+1的值, 1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)化简怎么算? (x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1怎么分解因式 *-----------------------------------------------*| 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 || 数学化简3x-x^2/5x+4 x 18/4x-12(3x-x^2)/(5x+4) x 18/(4x-12) 怎么化简[(x-2)平方-(X+3分之6-X)]平方,除以[X(X-2)+X+3分之X(X-6)] 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 一道化简数学题(2x^6-3x^5+4x^4-7x^3+2x-5)*(3x^5-x^3+2x^2+3x-8)怎么简便计算 立方根(x^3+3x^2+3x+1)化简怎么得x+1 x(x+2)-(x-1)(x+2)=3 这道题怎么化简 x(x 2)-(x-1)(x 2)=3 这道题怎么化简