计算(-3a2+2b2)(3a2-2b2)=______.-数学

题目简介

计算(-3a2+2b2)(3a2-2b2)=______.-数学

题目详情

计算(-3a2+2b2)(3a2-2b2)=______.
题型:填空题难度:中档来源:不详

答案

(-3a2+2b2)(3a2-2b2)
=-(3a2-2b2)(3a2-2b2)
=-(3a2-2b2)2
=-(9a4-12a2b2+4b4)
=-9a4+12a2b2-4b4.
故答案为-9a4+12a2b2-4b4.

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