Question

Consider the expression (2x + y) (5a – b)5 and
find the post-order.

Answer 1

I assume (5a – b)5 means the power (5a − b)^5. Converting to postfix (post-order):

- (2x + y) → 2 x * y +
- (5a − b)^5 → 5 a * b - 5 ^

Combine with the top-level multiplication:
Postfix: 2 x * y + 5 a * b - 5 ^ *

If instead (5a − b)5 meant (5a − b)·5 (multiplication by 5), the postfix would be:
2 x * y + 5 a * b - 5 * *