计算:(b+2a2)(-b-2a2)=_.
问题描述:
计算:(b+2a2)(-b-2a2)=______.
答
(b+2a2)(-b-2a2),
=-(b+2a2)(b+2a2),
=-(b+2a2)2,
=-4a4-4a2b-b2.
故答案为:-4a4-4a2b-b2.