Question

tn = n (n^2-1), then t4=​

Answer 1

Answer:

60

Step-by-step explanation:

t4 = 4(4²-1)

=4(16-1)

= 4 × 15

= 60

Answer 2

Answer:

$tn = n( {n}^{2} - 1) \\ therefore \: \: \: t4 \: = 4( {4}^{2} - 1) \\ = 4(16 - 1) \\ = 4 \times 15 \\ = 60$

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