问题
解答题
|
答案
①
=-6xyz；-36xy2z3 6yz2
②
=m2-4 2m+m2
=(m+2)(m-2) m(2+m)
；m-2 m
③
=8-2m m2-16
=-2(4-m) (m+4)(m-4)
，2 m+4
④
=a2-4a+4 a2-4
=(a-2)2 (a+2)(a-2)
；a-2 a+2
搜题请搜索小程序“爱下问搜题”
|
①
=-6xyz；-36xy2z3 6yz2
②
=m2-4 2m+m2
=(m+2)(m-2) m(2+m)
；m-2 m
③
=8-2m m2-16
=-2(4-m) (m+4)(m-4)
，2 m+4
④
=a2-4a+4 a2-4
=(a-2)2 (a+2)(a-2)
；a-2 a+2