Question

СРОЧНО
-8-2(1-b)-2b+1
a(b-c)+b(c-a)-c(b-a)

Answer 1

-8-2(1-b)-2b+1= -8-2-2b-2b+1= -10-4b+1= -9-4b

a(b-c)+b(c-a)-c(b-a)=ab-ac+bc-ba