Lily654 Lily654

17-10-2018
Mathematics

contestada

Solve the quadratic function by completing the square 2x^2+8x+14=0

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konrad509 konrad509

17-10-2018

[tex]2x^2+8x+14=0 \\\\x^2+4x+7=0\\\\x^2+4x+4+3=0\\\\(x+2)^2=-3\\\\x+2=\sqrt{-3} \vee x+2=-\sqrt{-3}\\\\x=-2+\sqrt3i \vee x=-2-\sqrt3 i[/tex]

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