1.
(x^2008-1)/(x-1)
2.
（t-2)^2(t^2+4)^2(t+2)^2
=[（t-2)(t^2+4)(t+2)]^2
=[（t^2-4)(t^2+4)]^2
=(t^4-16)^2
或t^8-32t^4+256
3.
（2x-1)(x+2)-(x-2)^2-(x+2)^2
=(x+2)(x-3)-(x-2)^2
=(x+2)(x-2)-(x-2)^2-(x+2)
=(x-2)(x+2-x+2)-(x+2)
=3x-10
=3*(-3/2)-10=-29/2
4.
由x(x-1)-(x^2-y)=-2化简得
x-y=2
(x^2+y^2)/2-xy=1/2*(x-y)^2=1/2*2^2=2
内容全部来源于网络收集，如有侵权，请联系网站删除！