【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010
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![【1/a-2+a²-1/(a+2)(a-1)】÷(a/a+2)²,其中a=2010](/uploads/image/z/14565220-52-0.jpg?t=%E3%80%901%2Fa-2%2Ba%26%23178%3B-1%2F%28a%2B2%29%28a-1%29%E3%80%91%C3%B7%28a%2Fa%2B2%29%26%23178%3B%2C%E5%85%B6%E4%B8%ADa%3D2010)
【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