Correct Answer: Option D

Explanation

n² - 6n - 4

For the 3rd term,
3² - 6(3) - 4

9 - 18 -4 = -13

For the 4th term,
4² - 6(4) - 4

16 - 24 - 4 = -12

Sum of both terms

-13 - 12 = -25

There is an explanation video available below.

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