Sir if in this qeustion , while calculating adj(A) , can we directly w

This question was asked in Ex 4.6, 13

Sir if in this qeustion , while calculating adj(A) , can we directly write co factors and calculate it in board examination?
Is it complusy to show minors and then calculate co factors , will there be any mark reduction of solving directly in CBSE board , the concern is time management sir ?