Write a step-by-step plan, including comments that reflect changes to the machine state, to solve:
Question 1. Input a, b, and c (in that order) and calculate ab + abc.
Question 2. Input a, b, c, d, and x (in that order) and calculate and display
a + bx + cx2 + dx3.
Question 3. Input a, b, c, d, and x (in that order) and calculate and display a + (b + (c + dx)x)x. This is another way to calculate the output value of Problem, but this formula involves fewer multiplications.
Question 4. Find the error(s) in the following:
![2189_Machine state.png](https://www.mywordsolution.com/CMSImages/2189_Machine%20state.png)
Question 5. Find the error(s) in the following:
![211_Machine state1.png](https://www.mywordsolution.com/CMSImages/211_Machine%20state1.png)