3)
6a-9b=3*(2a-3b)4x-xy=x*(4-y)5ab-5ac=5a*(b-c)3m²-6mn=3m*(m-2n)a²+a⁴=a²*(1+a²)15mn²-5mn=5mn*(3n-1)24x²y+36xy²=12xy*(2x-3y)-4x⁵+16x¹⁵=(-4x⁵)*(1-4x¹⁰)3x⁴-6x³+9x⁵=3x³*(x-2+3x²)8ab³-12a²b-24a²b²=4ab*(2b²-3a-6ab)4)
3x+3y-bx-by=3(x+y)+(-b)(x+y)=(x+y)(3-b)4n-nc-4+c=4n-4-cn+c= 4(n-1)+(-c)(n-1)=(n-1)(4-c)x⁷+x³+4x⁴+4=x³(x⁴+1)+4(x⁴+1)=(x⁴+1)(x³+4)6m²n-3m²+2mn²-mn=3m²(2n-1)+mn(2n-1)=(3m²+mn)(2n-1)4a⁴-5a³y-8a+10y=a³(4a-5y)+(-2)(4a-5y)=(a³-2)(4a-5y)a³b²*a²+a²b²-a=a²(ab²-1)+a(ab²-1)=(a²+a)(ab²-1)
