化简(a/a-2-a/a+3)*a^2+a-6/a
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化简(a/a-2-a/a+3)*a^2+a-6/a
化简(a/a-2-a/a+3)*a^2+a-6/a
化简(a/a-2-a/a+3)*a^2+a-6/a
(a/a-2-a/a+3)*a^2+a-6/a
=【1/(a-2)-1/(a+3)】×(a-2)(a+3)
=a+3-(a-2)
=3+2
=5
原式=[a(a+3)-a(a-2)]/(a-2)*(a+3)*(a+3)*(a-2)/a
=(3a+2a)/a
=5
(a/a-2-a/a+3)*a^2+a-6/a=(1/a-2-1/a+3)*(a^2+a-6)=(1/a-2-1/a+3)*(a+3)(a-2)
=(a+3)-(a-2)=5
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