АЛГЕБРА.легко очень! b) 2c(x-y)+p(x-y);

г) 9(a + b) - (a + b) ab;

б) (x-3) - y(x-3);

б) 2(x-7)-у(7-x);

б) x-p+(p-x)c.

2c(x-y)+p(x-y)
(x-y)•(2c+p)
(x-y)•(2c+p)

9(a + b) - (a + b) ab
9(a+b)-ab•(a+b)
(a+b)•(9-ab)

(x-3)-y(x-3)
(x-3)•(1-y)

2(x-7)-y(7-x)
2(x-7)-y•(-(x-7))
2(x-7)+y•(x-7)
(x-7)•(2+y)

x-p+(p-x)c
-(p-x)+c•(p-x)
-(p-x)•(1-c)