作业帮【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/15 04:56:31
【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010
【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010
【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010
【1/(a-2)+(a²-1)/(a+2)(a-1)】÷(a/a+2)²
=【1/(a-2)+(a+1)(a-1)/(a+2)(a-1)】×[(a+2)/a]²
=【1/(a-2)+(a+1)/(a+2)】×[(a+2)/a]²
=(a²-4)/(a+2)(a-2)×[(a+2)/a]²
=[(a+2)/a]²
=[(2010+2)/2010]²
=(1006/1005)²
=1012036/1010025
【1/(a-2)+(a²-1)/(a+2)(a-1)】÷(a/a+2)²
=【1/(a-2)+(a+1)(a-1)/(a+2)(a-1)】×[(a+2)/a]²
=【1/(a-2)+(a+1)/(a+2)】×[(a+2)/a]²
=(a²-4)/(a+2)(a-2)×[(a+2)/a]²
=[(a+2)/a]²
=[(2010+2)/2010]²
=(1006/1005)²
=1012036/1010025