2) ах+bх+ау+bу+аz+bz = x(a+b) + y(a+b) + z(a+b) =(a+b)(x+y+z)
4)25m^4 - n^6 = (5m^2)^2 - (n3)^2 =(5m^2 -n^3)(5m^2+n^3)
2)b^2+3b +2= b^2 + 2b +b+2 =b(b+2) +(b+2) =(b+2)(b+1)
4)d^2-7d-8= d^2 -8d+d-8=d(d-8) +(d-8) =(d-8)(d+1)
6)y^2 +2y-8=y^2-2y+4y-8 =y(y-2) +4(y-2)=(y-2)(y+4)
2)6m^6n^7 - 54m^4n^8 - 3m^3n^3 =3m^3n^3(2m^3n^4-18mn^5 -1)
4)24x(x-3) -6(3-x) = 24x(x-3)+6(x-3) =(x-3)(24x+6)= 6(x-3)(4x+1)