Saya masih barujadi jgn dilaporkan.Diketahui: ⁽ⁿ⁻¹⁾P₂ = 20n = n-1r = 2Gunakan rumus ini20 = (n-1)(n-2)20 = n²-2n-n+220 = n²-3n+2n²-3n+2-20 = 0n²-3n-18 = 0(n+3)(n-6) = 0n = {-3, 6}
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Saya masih baru
jadi jgn dilaporkan.
Diketahui:
⁽ⁿ⁻¹⁾P₂ = 20
n = n-1
r = 2
Gunakan rumus ini
20 = (n-1)(n-2)
20 = n²-2n-n+2
20 = n²-3n+2
n²-3n+2-20 = 0
n²-3n-18 = 0
(n+3)(n-6) = 0
n = {-3, 6}
___________________
n = 6
OR
n = -3
___________________
Semoga membantu
Answer by Tee Kay