jwab kakk pake cara. maksih

3. u6= ar^5= 2
u10= ar^9= 32

ar^9/ar^5= 32/2
r⁴= 16
r= 2

u6= ar^5= 2
a.2^5= 2
a.32= 2
a= 1/16

u14= ar^13
= 1/16.2^13
= 1/2⁴.2^13
= 2^9
= 512

4. u3= a+2b= 14
u7= a+6b= 26
____________ -
-4b= -12
b= 3

u3= a+2b= 14
a+2.3= 14
a+6= 14
a= 14-6
a= 8

s18= n/2(2a+(n-1)b)
= 18/2(2.8+(18-1)3)
= 9(16+17.3)
= 9(16+51)
= 9.67
= 603

5. diket: a= 1
b= 2
ditanya: u25
jwb: un= a+(n-1)b
u25= 1+(25-1)2
= 1+24.2
= 1+48
= 49

semoga membantu, mohon koreksinya