M+2n=2,m=3n-3, 3n-3+2n=2,n-3=2,n=5
1)4x^2-9=(2x-3)(2x+3)
2)16a^4-81=(4a^2-9)(4a^2+9)
3)4a^2+12ab+9b^2=(2a+3b)^2= (2a+3b)(2a+3b)
4)36x^2-12xy+y^2=(6x-y)^2=(6x-y)(6x-y)
1)x-y+ax-ay=(x-y)+(ax-ay)=
=(x-y)+а(x-у)=(1+а)(х-у)
2)4ab²-3b²+8a²b-6ab=
=b²(4a-3)+2ab(4a-3)=
=(4a-3)(b²+2ab)=
=(4a-3)(b(b+2a))
(4a-3)(b(b+2a))=
=(4a-3)(b²+2ab)=4ab²+8a²b-3b²-6ab