Problem 3: Generate Polynomial Features

Problem Description

Write a Python program that generates polynomial features (degree 2) for a single numeric column using PolynomialFeatures.

Input

A list of numeric values representing a single feature.

Output

The generated polynomial features (original value and its square).

Constraints

• At least 4 values.

Example Input

text
[10, 20, 30, 40]

Example Output

text
[[ 10. 100.]
 [ 20. 400.]
 [ 30. 900.]
 [ 40.1600.]]

Concepts Covered

PolynomialFeatures, degree=2.