HELP RN PLEASE. Which is equivalent to rootindex3 startroot 8 endroot superscript x?

Where did washington’s army spend a harsh and difficult winter in 1777–1778?

In what year did vladimir lenin and the bolsheviks seize power in russia? 1885 1900 1917 1961

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.