Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Келесі функцияны алыңыз және оны жеңілдетіңіз:

Input:
f (x) = 4x ^ 2 + 4x + 1

### Response:
f (x) = (4x + 1) (x + 1)

### End