carneirocoreia carneirocoreia 09-06-2020 Mathematics contestada Which expression is equivalent to (9x + 5y)²? a) 9x² + 45xy + 5y² b) 18x² + 45xy + 10y² c) 45x² + 45xy + 45y² d) 81x² + 90xy + 25y² e) 0