分解因式m +5n-mn-5m
问题描述:
分解因式m +5n-mn-5m
答
分解因式m +5n-mn-5m
m +5n-mn-5m= m -5m -mn+5n
= (m -5m )+(-mn+5n)
=m(m-5)-n(m-5)
=(m-5)(m-n)