6ab3b的知识精选

若2a﹣3b=﹣1,则代数式4a2﹣6ab+3b的值为(  )A.﹣1            B.1     ...
问题详情:若2a﹣3b=﹣1,则代数式4a2﹣6ab+3b的值为()A.﹣1            B.1               C.2              D.3【回答】B【分析】将代数式4a2﹣6ab+3b变形后,整体代入可得结论.【解答】解:4a2﹣6ab...
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