Respuesta :

snog

Answer:

4x² + 4x + 1

Step-by-step explanation:

We know that (a + b)² = a² + 2ab + b², therefore, (2x + 1)² = 4x² + 4x + 1.

Answer:

(2x)^2  + 2(2x)(1) + (1)^2

4x^2 + 4x + 1

Step-by-step explanation: