Respuesta :

Answer:

(3w + 7)² or (3w + 7)(3w + 7)

Step-by-step explanation:

Identity

  • a² + 2ab + b² = (a + b)² = (a + b)(a + b)

Solving

  • 9w² + 42w + 49
  • (3w)² + 2(3w)(7)  + (7)²
  • (3w + 7)² or (3w + 7)(3w + 7)