计算(-1+1/100)X(-1+1/101)X(-1+1/102)X.X(-1+1/2010)
计算 x(x+3)-(x-1)(x-2)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
计算:(x+1/x)²
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
计算:/3-x/+/x-1/(x>5).
计算5x(2x² -3x+1)
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:(1)(2x/x+2)的平方×x+2/x(x-2)-(1/x-2-1/x+2)
分式计算:x分之x²-1乘x+1分之x+(3x+1)
计算3x(x^2-x-1)-2x^2(1-x)
计算 2(x²-x+1)-(-2x+3x²)+(1-x)