What is the nth term of the sequence 1,4,9,16​

hello poland

this are square numbers

1×1=1

2×2=4

3×3=9

4×4=16

5×5=25

6×6=36

7×7=49

8×8=64

9×9=81

the ninth is 81

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1