15xy-25y²=5у(3х-5у).
12a⁵-4a⁴=4а⁴(3а-1).
6а-6у+аb-by=6a+ab-6y-by=a(6+b)-y(6-b)=a(6+b)+y(6+b)=(6+b)(a-y).
15xy-25y²=5у(3х-5у).
12a⁵-4a⁴=4а⁴(3а-1).
6а-6у+аb-by=6a+ab-6y-by=a(6+b)-y(6-b)=a(6+b)+y(6+b)=(6+b)(a-y).