3a^3-12a^2+12a1/4m^3n-1/4m^2n^2+1/16mn^3_数学解答

3a^3-12a^2+12a
1/4m^3n-1/4m^2n^2+1/16mn^3

人气：118 ℃　时间：2020-04-06 17:21:52

解答

(1)a(3a^2-12a+12)
=3a(a^2-4a+4)
=3a(a-2)^2
(2)1/4mn(m^2-mn+1/4n^2)
=1/4mn(m-1/2n)^2