6. DIKETAHUI BARISAN BILANGAN 2 4 8 14 22, ... SUKU KE-10 ADALAH? pake cara

32 44 58 74 92
Jwbnya 92 Soalnya genap nilai tambahnya 22+10 = 32 32+12 = 44 44+14 = 58 58+16 = 74 74+18 = 92

2a = 2
a = 1

3a + b = 2
(3 × 1) + b = 2
3 + b = 2
b = -1

a + b + c = 2
1 + (-1) + c = 2
0 + c = 2
c = 2

U10 = an² + bn + c
= (1 × 10²) + ((-1) × 10) + 2
= 100 + (-10) + 2 = 92