SOLUTION: Can someone help me solve this problem? Thank you so much! Solve x² + 4x – 7 = 0 by completing the square. How many solutions are there?

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Question 610753: Can someone help me solve this problem? Thank you so much!
Solve x² + 4x – 7 = 0 by completing the square. How many solutions are there?

Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!
x^2 + 4x = 7

x^2 + 4x + (4/2)^2 = 7 + (4/2)^2

(x + 2)^2 = 11

x + 2 = ± √11

x = -2 ± √11
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