22)Find the excluded values, if any of the expression \(\frac{t}{t^2-5t+6}\)
Answer: \(\frac{t}{t^2-5t+6}\) is undefined when \(t^2-5t+6=0\) i.e.
\((t-3)(t-2)=0 \Rightarrow t=3, 2\).
∴ The excluded values are 3, 2.