4(x+1)2-(2x+5)(2x-5)怎么做?
2x/(x^2+x)-1/x=5/(x+1)怎么做?
2x^4-x^2-x-5除以x^2+1用多项式除法怎么做,结果是2x^2-x-2-3/(x^2+1)
(2x+1)(3x+2)^2(x^2+5x-24)>0怎么做
(5x+2)(x-2) -5(x+1)(x-3)怎么做
4(x+1)2-(2x+5)(2x-5)怎么做?
5/2x+4-1/2-x=4/x^2-4怎么做?
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
|x+3|-|2x-1|+|x-2|>1怎么做
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
lim(sin(x^2*cos(1/x)))/x怎么做?
(x^2-5x)(x^2-5x-10)-56怎么做?