因式分解 m²（p－q)－p

因式分解 m²（p－q)－p
因式分解 m²（p－q)－p

因式分解 m²（p－q)－p
题目应是 因式分解 m²（p－q)－p+q
=m^2(p-q)-(p-q)
=(p-q)(m^2-1)
=(p-q)(m+1)(m-1)

=m²p-m²q-p
=（m²-1）p-m²q
=（m+1）（m-1）p-m²q

出错啦！