Question

Find the nth term of this quadratic sequence
2, 8, 18, 32, 50,

Answer 1

Explanation:

+6,+10,+14,+18

+4+4+4

therefore quadratic 4/period function=2

`y = 2{x}^(2) + bx + c`

y=2 x=1

`0 = b + c`

y=8 x=2

8=8+2b+c

0=2b+c

y=18 x=3

0=3b+c

therefore

the equation is 2x^2=y