Question

Tolong jawabnya pakai caranya

Answer 1

U3 = ar²
12=ar²
a = 12/r²  (1)

ar^5  = 96  (2)

substitusi pers 1 ke pers 2
12/r².r^5=96
12r³=96
r³=96/12
r³=8
r=2

a=12/r²
a=12/2²
a=12/4
a=3

S10 = a(1-r^10)/1-r
s10=3(1-2^10)/1-2
s10=3(1-1024)/-1
s10=3(-1023)/-1
s10=3(1023)
s10=3069