Answer:
[tex]372100[/tex]
Step-by-step explanation:
A number to the [tex]x[/tex] power represents [tex]x[/tex] amount of times the number is multiplied by itself. To the second power means that the number is multiplied by itself twice.
[tex][(20\times30)+10]^2 = 610^2[/tex] (first work on terms inside parentheses)
[tex]= 372100[/tex] ([tex]610^2 = 610\times 610[/tex])
Hope this helps :)