Question

4m³-m-1因式分解

Answer 1

原式=4m³-m+2m-1
=m(4m²-1)+2m-1
=m(2m+1)(2m-1)+(2m-1)
=(2m²+m)(2m+1)+(2m-1)
=(2m-1)(2m²+m+1)

追答

+ m吧

Answer 2

解：
4m³-m-1
= 4m³-4m²+m+4m²-1
=m(2m-1)²+(2m+1)(2m-1)
=(2m-1)(2m²-m+2m+1)
=(2m-1)(2m²+m+1）

Answer 3

我知道