Help!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:
523
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10.
5.23 x [tex]10^{2}[/tex]
Scientific Notation: 5.23 x [tex]10^{2}[/tex]
Expanded Form: 523
good luck, hope this helps :)