Step 1: Confirm if the sequence is quadratic. This is done by finding the second difference.
Step 2: If you divide the second difference by 2, you will get the value of a.
1
²
Step 3: Next, substitute the number
Step 4: Now, take these values from the numbers in the original number sequence and work out the nth term of these numbers that form a linear sequence.
Step 5: Write down your final answer in the form an² + bn + c.
