x²-4分之4 + x+2分之1 化简计算

来源：学生作业学帮网编辑：学帮网时间：2024/06/01 03:27:33

解
4/(x²-4)+1/(x+2)
=4/(x-2)(x+2)+(x-2)/(x-2)(x+2)
=[4+(x-2)]/(x-2)(x+2)
=(x+2)/(x-2)(x+2)
=1/(x-2)