化简9-a²/a²+6a+9÷a²-3a/a+3+1/a
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化简9-a²/a²+6a+9÷a²-3a/a+3+1/a
化简9-a²/a²+6a+9÷a²-3a/a+3+1/a
化简9-a²/a²+6a+9÷a²-3a/a+3+1/a
您好:
9-a²/a²+6a+9÷a²-3a/a+3+1/a
=(3+a)(3-a)/(a+3)²÷a(a-3)/(a+3) +1/a
=1/a+1/a
=2/a
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