问题标题:
【化简[(3a-4b)(-3a-4b)-(4b-3a)²-3a(1/3ab²+a-b)]÷(-3a)】
问题描述:
化简[(3a-4b)(-3a-4b)-(4b-3a)²-3a(1/3ab²+a-b)]÷(-3a)
任文岚回答:
[(3a-4b)(-3a-4b)-(4b-3a)²-3a(1/3ab²+a-b)]÷(-3a)
=[(-4b+3a)(-4b-3a)-(4b-3a)²-3a(1/3ab²+a-b)]÷(-3a)
=[16b²-9a²-16b²+24ab-9a²-3a(1/3ab²+a-b)]÷(-3a)
=[24ab-18a²-3a(1/3ab²+a-b)]÷(-3a)
=6a-8b+1/3ab²+a-b
=7a-9b+1/3ab²
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