jxy2337 jxy2337
  • 18-10-2021
  • Mathematics
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Fill in the number that completes the square. x² + 4x + ___

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VirαtKσhli
VirαtKσhli VirαtKσhli
  • 18-10-2021

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
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