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b. a = 50 dan b = - 3, maka :
c. a = 3 dan b = 4, maka :
d. a = 60 dan b = - 6, maka :
e. a = 98 dan b = - 2, maka :
f. a = 1 dan b = 6, maka :
g. a = 2 dan b = 9, maka :
h. a = 47 dan b = - 7, maka :
i. a = 35 dan b = 4, maka :
U10 = 1+ (9x5) Sn = n/2 (a+Un)
= 1 + 45 S10 = 5 (1+46)
= 46 = 5 x 47
= 235
2. b = -3
U10 = -23
S10 = 365
3. b = 4
U10 = 48
S10 = 225
4. b = -6
U10 = 6
S10 = 330
5. b = -2
U10 = 80
S10 = 890
6. b = 6
U10 = 55
S10 = 330
7. b = 9
U10 = 83
S10 = 460
8. b = -7
U10 = -16
S10 = 155
9. b = 4
U10 = 71
S10 = 530
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