3a^3-12a^2+12a1/4m^3n-1/4m^2n^2+1/16mn^3

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3a^3-12a^2+12a1/4m^3n-1/4m^2n^2+1/16mn^3

3a^3-12a^2+12a1/4m^3n-1/4m^2n^2+1/16mn^3
3a^3-12a^2+12a
1/4m^3n-1/4m^2n^2+1/16mn^3

3a^3-12a^2+12a1/4m^3n-1/4m^2n^2+1/16mn^3
(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

3a^3-12a^2+12a=3a(a^2-4a+14)=3a(a-2)^2
m^3n/4-m^2n^2/4+mn^3/16=mn(m^2-mn+n^2/4)/4=mn[(m-n/2)^2]/4

(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

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

3a^3-12a^2+12a=3a(a^2-4a+4)=3a(a-2)^2
1/4m^3n-1/4m^2n^2+1/16mn^3=1/16mn(4m^2-4mn+n^2)
=1/16mn[(2m)^2-2*2m*n+n^2]
=1/16mn(2m-n)^2

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