Question

Here are the first four terms of a quadratic sequence, the nth term of this quadratic sequence is an2 +bn+c .
2 12 28 50
Find the values of a,b and c
.

Answer 1

Step-by-step explanation:

2+bn+c

for n=1

2+b+c=2

b+c=0

b= -c

for n=2

2+2b+c=12

2-2c+c=12

-c=10

c=-10

b=10