计算:(b+2a2)(-b-2a2)=_.

问题描述:

计算:(b+2a2)(-b-2a2)=______.

(b+2a2)(-b-2a2),
=-(b+2a2)(b+2a2),
=-(b+2a22
=-4a4-4a2b-b2
故答案为:-4a4-4a2b-b2