Q. What is the next term of the geometric sequence?−71, 74, −716
Identify pattern in sequence: Identify the pattern in the sequence to determine if it is geometric.The sequence is given as: −(71), (74), −(716)We can see that each term is obtained by multiplying the previous term by a common ratio.
Find common ratio: Find the common ratio by dividing the second term by the first term.Common ratio r = 74 / 7−(1) = −4
Verify common ratio: Verify the common ratio by dividing the third term by the second term to ensure consistency.Check ratio = (−716)÷(74)=−4The common ratio is consistent, confirming that the sequence is geometric with a common ratio of −4.
Calculate next term: Calculate the next term by multiplying the last known term by the common ratio.Next term = −(716)×−4=764