Question

упростите выражение :1-3x+3x^2-x^3/c-cx+a-ax

Answer 1

((1-x^3)-3x(1-x))/(c(1-x)+a(1-
x))=
по формуле кубов
1-x^3=(1-x)(1+x+x^2)
=((1-x)(1+x+x^2)-3x(1-x))/
/(1-x)(c+a)=
=(1-x)(1+x+x^2-3x))/(1-x)(c+a)
=(x^2-2x+1)/(c+a)=
=(x-1)^2/(c+a)