Answer:
Step-by-step explanation:
divide by 3: x^2 = 4
Think you can finish that off now?
Answer:
I cannot see
Step-by-step explanation:
I would help
Answer:
The first term is:
Step-by-step explanation:
The arithmetic sequence is defined by

where
is the first term
is the common difference
as
the 17th term of an arithmetic sequence is 51.
i.e. 
so

∵
,
, 
∵ 

Therefore, the first term is:
They both have the same rate of change