6ax^2-12ax^3=6ax^2(1-6x)
24a^3c-3a^2c= 3a^2c(8a-1)
5m^2n-20mn^2=5mn(m-4n) 18ab^2+27a^2b=9ab(2b-3a)
34) 100a^2-1=1(100a^2-1)
1) 4c(c-2)-(c-4)^2=3c^2-16
2) 3a(a+2)-(a+3)^2=3a^2+6a-(a^2+6a+9)=3a^2+6a-a^2-6a-9a=2a^2-9a
3) 3(y-1)^2+6y=3y^2-6y+3+6y=3y^2+3
4) 8c+4(1-c)^2=8c+4-8c+4c^2=4+4c^2
^-это степень