The hosts were already leading 1-0 at that point thanks to David Silva's first-half opener, though their domination arguably deserved more than a single-goal lead.
The all-important second goal came just two minutes after the interval as Aguero reminded the world why he is considered one of the best strikers of his generation.
David de Gea's kick was seized upon in midfield, with Bernardo feeding Ageuro just a matter of yards inside the United half.
The Argentine drove for goal, drawing the attention of the United defence before exchanging passes with Riyad Mahrez and rifling a powerful effort beyond de Gea and into the roof of the net at the near post from a tight angle.
It was a fine finish from the City star as he took his tally in Manchester derbies to eight, with no player having scored more in the fixture in the Premier League era.
November 11, 2018