Question

计算：(-2a)^3·a^3+2a^2·a^4-a^5·a

写出解题过程

Answer 1

(-2a)^3·a^3+2a^2·a^4-a^5·a
=（-2）^3·a^3·a^3+2a^(2+4)-a^(5+1)
= -8a^(3+3)+2a^6-a^6
= -8a^6+2a^6-a^6
= -7a^6