1：计算2x - 10.3x= 3x - x - 5x-b + 0.6b - 2.6b m - n² + m - n²

计算2x X 4x--3x= 计算(x+1)(x+2)(x+3)(x+4) 计算：（x+1)(x-2)(x-3)(x-6) 计算 x(x+3)-(x-1)(x-2） 如何计算 (x+1)(x+2)(x+3)(x+4) 计算(X-1)(X-2)(X-3)(X-4) (x-1)(x-2)(x-3)(x-4)-24计算 计算：(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9 计算(3-x)/(1-x)+(x^2-2)/(x^2-8x+7)=1+(5-x)/(7-x) 6x(x-2)-(x-2)(3x-1)=3x^2-8怎么计算 计算：x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3) x*(x+1)*(x+2)*(x+3)=360 x=?计算过程以及结果 计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3) 计算：1-2x+x^2/x-x^3*xy+x^2y/x-x^2 计算5(x^2+x-3)-4x(6+x)+x(4-x)=02x(x-1)-x(2x-5) 计算:1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+...+1/(x+2009)(x+2010)=1/2x+4020 计算(x^2+2x+1/x+2)/(x^2-1/x^2+2x)*(x-1/x),并求当x=-3/2时的值 c语言输入一个实数x,计算x^2+1 x>=-1x+cos(x) -1>x>=-3x^3+e^x x