Respuesta :

Answer:

(x + 2)²

Step-by-step explanation:

Given

x² + 4x + 4 ← is a perfect square of the form

(x + a)² = x² + 2ax + a²

Compare like terms

a² = 4 ⇒ a = [tex]\sqrt{4}[/tex] = 2, thus

x² + 4x + 4 = (x + 2)²

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