【单选题】以下哪个Q[x]中的最简分式?()A.(x-1)/(x+1)B.(x^2+2x)/x^4C.(x-1)/(x^2+2)^2D.x^5/(x^2-1)
【单选题】以下哪个Q[x]中的最简分式?()
A.(x-1)/(x+1)
B.(x^2+2x)/x^4
C.(x-1)/(x^2+2)^2
D.x^5/(x^2-1)
参考答案和解析
(-1/3(x-1))+(1/(x-1)^2)+((x+1)/(3(x^2+x+1)))
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