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Fill in the number that completes the square. x² + 4x + ___

Fill in the number that completes the square. x² + 4x + ___
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3 votes
Fill in the number that completes the square. x² + 4x + ___

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User Ima
by
8.3k points

1 Answer

4 votes

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
answered
User Mucka
by
7.9k points
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