" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
an=n⁴-n³-27n+27=0
n³(n-1)-27(n-1)=0
(n³-27)(n-1)=0
n³-27=0 lub n-1=0
n=3 lub n=1