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gregori [183]
3 years ago
14

Use the given nth term formula to compute the first five terms of the sequence. an = 8n^2 − 4n

Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer:

0,4,24,60,112

Step-by-step explanation:

an = 8n² − 4n

first 5 terms is a0, a1, a2, a3 and a4

for a0, n = 0,

a0 = 8(0)² − 4(0) = 0

for a1, n = 1,

a1 = 8(1)² − 4(1) = 8-4 = 4

for a2, n = 2,

a2 = 8(2)² − 4(2) = 8(4)- 4(2) = 32-8 = 24

for a3, n = 3,

a3 = 8(3)² − 4(3) = 8(9) − 4(3) = 72 - 12 = 60

for a4, n = 4,

a4 = 8(4)² − 4(4) = 8(16) − 4(4) = 128 - 16 = 112

hence the first 5 terms are

0,4,24,60,112

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