因式分解:(a^3)-3(a^2)b-4a(b^2)=
问题描述:
因式分解:(a^3)-3(a^2)b-4a(b^2)=
答
:(a^3)-3a²b-4ab²
=a(a²-3ab-4b²)
=a(a+b)(a-4b)