If $$a = 2$$ and $$b = 3$$, find the value of $$ab - a^{2}$$.
$$\textbf{Step 1 : Given information,}$$
$$\text{Given that, }a=2,b=3$$
$$\text{Expression is}=ab-a^2$$
$$\textbf{Step 2 : Put the values in expression,}$$
$$ab-a^2=2\times3-(2)^2=6-4=2$$
$$\textbf{Hence, the required value of }\mathbf{ab-a^2}\textbf{ for }\mathbf{a=2,b=3}\textbf{ is }\mathbf{2}.$$