Respuesta :

Answer:

(x + 42)(x - 42)

Step-by-step explanation:

Keep this in mind :

  • a² - b² = (a + b)(a - b)

In this case,

  • a = x
  • b = 42

So, by factorizing,

  • x² - 42² = (x + 42)(x - 42)

★a²-b²=(a+b)(a-b)

So

  • x²-42²

a=x ,b=42

  • (x+42)(x-42)

Done!