1. **State the problem:** We are given the quadratic expression $p = n^2 + 21$ and need to find the value of $p$ for specific values of $n$. 2. **Formula:** The formula is $p = n^2 + 21$. 3. **Evaluate for $n=1$:** Substitute $n=1$ into the formula: $$p = 1^2 + 21 = 1 + 21 = 22$$ 4. **Evaluate for $n=0$:** Substitute $n=0$ into the formula: $$p = 0^2 + 21 = 0 + 21 = 21$$ **Final answers:** - When $n=1$, $p=22$. - When $n=0$, $p=21$.