计算:a²/a-2 -(a+2)
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计算:a²/a-2 -(a+2)
计算:a²/a-2 -(a+2)
计算:a²/a-2 -(a+2)
a²/(a-2) -(a+2)
=a²/(a-2) -(a²-4)/(a-2)
= 4/(a-2)
计算:a²/a-2 -(a+2)
计算:a²/a-2 -(a+2)
计算:a²/a-2 -(a+2)
a²/(a-2) -(a+2)
=a²/(a-2) -(a²-4)/(a-2)
= 4/(a-2)