If $$x=120$$, what is the value of $$\frac{x^{2}}{12^{2}}$$? 
Overseas Competition->Knowledge Point->Calculation Modules->Basic Concepts of Equation->Equivalent Substitution->Algebraic Expressions
$$\frac{x^{2}}{12^{2}}=\left(\frac{x}{12}\right)^{2}=\left(\frac{120}{12}\right)^{2}=\left(10\right)^{2}=100$$ 