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Solve x2 + 2x + 5 = 4 by completing the square

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Solve x2 + 2x + 5 = 4 by completing the square-example-1
answered
User Aaron McGuire
by
9.3k points
5 votes

Answer:

x = -1

Explanation:


x^2 + 2x + 5 = 4

Subtract the constant term.


x^2 + 2x = -1

Add half of the coefficient of the x-term to complete the square.


x^2 + 2x + 1 = -1 + 1


(x + 1)^2 = 0


x + 1 = 0


x = -1

answered
User Yurii Holskyi
by
8.1k points

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