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Quadratic equation by completing the square x^2+6x=18

Quadratic equation by completing the square x^2+6x=18
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3 votes
Quadratic equation by completing the square x^2+6x=18

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User Jason R
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x^2+6x=18\\ x^2+6x+9=27\\ (x+3)^2=27\\ x+3=√(27) \vee x+3=-√(27)\\ x=-3+3\sqrt 3 \vee x=-3-3\sqrt3
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User DMGregory
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