作业帮计算:x^-4/(x-2)(x-1)+x^-4/(x+2)(x+1)
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 00:35:04
计算:x^-4/(x-2)(x-1)+x^-4/(x+2)(x+1)
计算:x^-4/(x-2)(x-1)+x^-4/(x+2)(x+1)
计算:x^-4/(x-2)(x-1)+x^-4/(x+2)(x+1)
原式=(x+2)(x-2)/(x-2)(x-1)+(x+2)(x-2)/(x+2)(x+1)
=(x+2)/(x-1)+(x-2)/(x+1)
=(x²+3x+2+x²-3x+2)/(x+1)(x-1)
=(2x²+4)/(x²-1)
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