Question

Tolong dijawab..

disertai cara kerjanya

Answer 1

1 5 13 25
4 8 12
4 4

2a=4
a=4/2
a=2

3a+b=4
3.2+b=4
6+b=4
b=4-6
b=-2

a+b+c=1
2-2+c=1
c=1

Un=a.n²+b.n+c
U9=2.9.9+(-2).9+1
=162-18+1
= 145

SEMANGAT YA..UNBKNYA...