14ab+21a=7a(2b+3)
25xy²-10x²y=5xy(5y-2x)
y(a-b)+2(a-b)=(y+2)(a-b)
5a²-5ax-7a-7x= 5a(a-x)-7(a-x)=(5a-7)(a-x)
1)7 а( 2в+3) 2)5ху(5у-2х 3)(а-в)(у+2) 4)а(5а-7)-х(5-7)
14ab+21a=7a(2b+3)
25xy²-10x²y=5xy(5y-2x)
y(a-b)+2(a-b)=(y+2)(a-b)
5a²-5ax-7a-7x= 5a(a-x)-7(a-x)=(5a-7)(a-x)
1)7 а( 2в+3) 2)5ху(5у-2х 3)(а-в)(у+2) 4)а(5а-7)-х(5-7)