作业帮化简：(1/3a-3/4b)^2-(1/3a+3/4b)^2
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 06:59:14
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化简：(1/3a-3/4b)^2-(1/3a+3/4b)^2
化简：(1/3a-3/4b)^2-(1/3a+3/4b)^2
化简：(1/3a-3/4b)^2-(1/3a+3/4b)^2
(1/3a-3/4b)^2-(1/3a+3/4b)^2
=(1/3a-3/4b+1/3a+3/4b)(1/3a-3/4b-1/3a-3/4b)
=2/3a×(-3/2)b
=-ab
(1/3a-3/4b)^2-(1/3a+3/4b)^2
=(1/3a-3/4b+1/3a+3/4b)(1/3a-3/4b-1/3a-3/4b)
=2/3a*(-3/2b)
=-ab