-3x^2-x+4化简

化简：1x(x+1)+1(x+1)(x+2)+1(x+2)(x+3)+1(x+3)(x+4) 化简3x^2(x-1)-3x(x^2+1)+4x(2X-5) 化简：1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4) 3x/(x-2)-x/(x+2)÷2x/(x-4)化简 化简X-X^2-X^3-X^4-...X^9+X^10 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 约分 (X的平方+4x+3)(2x-x)^/(X^+X)(X^+X-6), 化简：[(x+2)/(x^2-4)-(2x-5)/(x-4x+4)]÷[(x-3)/(x-2)] 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-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 化简[(X^2-2X)分之(X+2)-(X^2-4X+4)分之(X-1)]除以x-4/x^3-2x^2