x²-4分之4 + x+2分之1 化简计算

问题描述:

x²-4分之4 + x+2分之1 化简计算


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)