Разложите на множители 1) ay+zy-2ap-2zp; 2) 5ac-6bd+5ad-6bc; 3) a (5a-4b) - 10a+8b; 4ab-6cd-12ad+2bc;

1) ay+zy-2ap-2zp=y (a+z) - 2p (a+z) = (y-2p) (a+z);

2) 5ac-6bd+5ad-6bc=5a (c+d) - 6b (c+d) = (5a-6b) (c+d);

3) a (5a-4b) - 10a+8b=a (5a-4b) - 2 (5a-4b) = (a-2) (5a-4b);

4) 4ab-6cd-12ad+2bc=4a (b-3d) + 2c (b-3d) = (4a+2c) (b-3d);