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12-10-2019
Mathematics

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Solve the equation by completing the square. x^2-12=-4x

Respuesta :

mourfious mourfious

12-10-2019

Step-by-step explanation:

given

[tex] {x}^{2} - 12 = - 4x \\ {x}^{2} + 4x - 12 = 0 \\ {x}^{2} + 4x + 4 - 16 = 0 \\ {(x + 2)}^{2} = 16 \\ x + 2 = 4 \\ x = 2[/tex]

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