(a²-4b)÷(a-2b)求步骤
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(a²-4b)÷(a-2b)求步骤
(a²-4b)÷(a-2b)求步骤
(a²-4b)÷(a-2b)求步骤
(a²-4b)÷(a-2b)原式=(a-2b)(a+2b)÷(a-2b)
= a+2b
原式=(a+2b)(a-2b)/(a-2b)=a+2b
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