2x2-58x+396=0

Correct result:

x1 =  18
x2 =  11

#### Solution:

${x}_{1}=\frac{58+\sqrt{5{8}^{2}-4\cdot 2\cdot 396}}{2\cdot 2}=18$
${x}_{2}=\frac{58-\sqrt{5{8}^{2}-4\cdot 2\cdot 396}}{2\cdot 2}=11$

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