Concept of simplification

Concepts

What is the result of simplification of the expression 2.5 div 0.5 xx 0.1 -0.05 ?

Problem based on simplification

Which features of endoparasites shows simplification ?

Write whether (2 sqrt(45) + 3 sqrt(20))/(2 sqrt(5)) on simplification gives an irrational or a rational number .

(0.04)^(-1.5) on simplification gives

Application of (a^(3)-b^(3)) formula in simplification