Answer:
?=49
Step-by-step explanation:
You have to divide the middle term by 2 and then square it.
14/2=7
7^2=49
Therefore, ?=49
I hope this helped and have a good rest of your day!
Answer:
21
Step-by-step explanation:
To find the common difference subtract going from right to left.
29-18 = 11
18-7 = 11
7 - -4 = 11
- 4 - - 15 = 11
d = 11