Quadratic equation formula tattoo

Tatuaje ecuación matemática en el cuello

A tattoo done on the neck of a girl, who loves math for sure. You can see the mathematical formula to find the roots in a quadratic equation, drawn on the neck of this type.

x= (-b +- sqrt(b2-4ac))/2a.

Perhaps she got it one week before the final exam of math? (just joking).

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