Question

d. When adding two numbers, such as 123 and 423, care is taken to first line them up and then add like digits. How does expanding this expression to [(1 × 102) + (2 × 101) + (3 × 100)] + [(4 × 102) + (2 × 101) + (3 × 100)] make the operation more like a polynomial addition problem?

Answer 1

 Left for you. Note that on this forum exponents are denoted with ^. So, 1000000 is 10^6 not 106.