Question 967706
factor out a cos(x) to get:


cos^3(x) + cos(x) * sin^2(x) = cos(x) * (cos^2(x) + sin^2(x))


since cos^2(x) + sin^2(x) = 1, this becomes cos(x) * 1 which becomes cos(x).


the expression can be simplified to cos(x).