" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Un = 2(n²) - 5U4 = 2(4²) -5 = 2(16) - 5 = 32 - 5 = 27
U5 = 2(5²) - 5 = 2(25) - 5 = 50 - 5 = 45
U4 + U5 = 27 + 45 = 72