(2a-3b)(2a+3b)(4a的4次方+9b的平方)
=﹙4a的2次方-9b的平方﹚﹙4a的4次方+9b的平方﹚
=16a的6次方+36a²b²-36a的4次方b²-81b的4次方
(2a-3b)(2a+3b)(4a的4次方+9b的平方)=
(2a-3b)(2a+3b)(4a的4次方+9b的平方)=
數(shù)學(xué)人氣:302 ℃時(shí)間:2020-03-25 19:07:25
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