计算:x³-x+1/x²-1-x²+x/x+1+2x+/x+1谢谢!
计算下列各题:(1+x)(x-1/x²+x-1-x/x³-x)
计算x²/x-1-x-1
计算【x-1】【x²+x+1】
4x²-1/3x²-x·9x³-x/2x^4-x³计算 急
x(x²-1)+2x²(x+1)-3x(2x-5)计算
计算:2x/(x-2)(x+1)÷(1-x/x+1)-x²+2x/x²-4?
x+2/x²-2x-x-1/x²-4x+4计算
计算(x²+x+1)(x²-x+1)
计算:(3/x)+(x/x²-1)-(4/1-x)
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
(4x³)²×[x³-x(2x-1)]