Answer:
3, 12, 27 and 300
Step-by-step explanation:
Plug n as 1, 2, 3 and 10.
3(1)² = 3
3(2)² = 12
3(3)² = 27
3(10)² = 300
The formula is 6 a^2
6 x (11^2)
11 x 11=121
6 x 121 = 726
So 726 is your answer
The answer is -1.