1+ cos^2 +cos^4/ 3 cos^2+sin^4 решиите сроочно

Ответ. (1+ (cos(x))^2 +(cos(x))^4)/(3*(cos(x))^2+(sin(x))^4)= (1+ (cos(x))^2 +(cos(x))^4)/(3*(cos(x))^2+((1-(cos(x))^2)^2)=((1+ (cos(x))^2 +(cos(x))^4)/(1+(cos(x))^2+(cos(x))^4)=1;