NylaaH686524 NylaaH686524
  • 03-11-2022
  • Mathematics
contestada

[tex]2x ^{2} - 6x + 10 = 0[/tex]solve by completing the square

tex2x 2 6x 10 0texsolve by completing the square class=

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LinleyZ219428 LinleyZ219428
  • 03-11-2022

We know that we can use the quadratic equation

Using this we have

[tex]\begin{gathered} x=\frac{-(-6)\pm\sqrt[]{(-6)^2-4\cdot2\cdot10}}{2\cdot2}=\frac{6\pm\sqrt[]{36-80}}{4} \\ =\frac{6\pm\sqrt[]{-44}}{4}=\frac{6\pm\sqrt[]{4\cdot-11}}{4}=\frac{6\pm2\cdot\sqrt[]{-11}}{4} \\ =2\cdot(\frac{3\pm\sqrt[]{-11}}{4})=\frac{3\pm\sqrt[]{-11}}{2}=\frac{3\pm\sqrt[]{11}i}{2} \\ =\frac{3}{2}\pm\frac{\sqrt[]{11}}{2}i \end{gathered}[/tex]

So the answer is B)

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