Respuesta :

VirαtKσhli

Given :-

  • x² + 4x + __

To find :-

  • The value of blank .

Solution :-

We can use the identity ,

  • (a+b)² = a² + b² + 2ab .

Given ,

  • x² + 4x + __
  • x² + 2*2*x + __

Add 2²

  • x² + 2.2.x + 2²
  • ( x + 2)²