pq formel

pq formel

x2+18x+14=2

\(x^2+18x+14=2\)     [-2

\(x^2+18x+12=0\)

.         p          q

\(x=-\frac{p}{2}\pm\sqrt{(\frac{p}{2})^2-q}\)

\(x=-\frac{18}{2}\pm\sqrt{(\frac{18}{2})^2-12}\)

\(x=-9\pm\sqrt{9^2-12}\)

\(x=-9\pm\sqrt{69}\)

\(x_1=-0,693376\)

\(x_2=-17,306624\)

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