am nevoie mult va rog!

Răspuns:
(2x/9a²)²×(2x/9a²)⁵:(2x/9a²)⁶×9a²/2x=
(2x/9a²)⁷×1/(2x/9a²)⁶×9a²/2x=
(2x/9a²)¹×9a²/2x=1