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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