(2a--b)(2a+b)(4a^2--b^2)
=(4a^2--b^2)(4a^2--b^2)
=(4a^2--b^2)^2
=16a^4--8a^2b^2+b^4.
计算:(2a-b)(2a+b)(4a的平方-b平方)
计算:(2a-b)(2a+b)(4a的平方-b平方)
数学人气:172 ℃时间:2019-10-19 02:33:27
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