Problem

\( x^{2}-9 x+3=0 \)

Answer

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Answer

\( x_1=\frac{9-\sqrt{69}}{2}=-0.6877 \), \( x_2=\frac{9+\sqrt{69}}{2}=12.6877 \)

Steps

Step 1 ：\( x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\)

Step 2 ：\( x=\frac{9\pm\sqrt{81-12}}{2}\)

Step 3 ：\( x_1=\frac{9-\sqrt{69}}{2}=-0.6877 \), \( x_2=\frac{9+\sqrt{69}}{2}=12.6877 \)

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