Answer:
[tex]x = \frac{200}{761} [/tex]
[tex]2 {}^{3} x - 6.2 {}^{2} + 8 = 0 \\ 8x - 6.2 {}^{2} x + 8 = 0 \\ 8x - 38.44x + 8 = 0 \\ - 30.44x + 8 = 0 \\ - 30.44x = - 8 \\ x = \frac{ - 8}{ - 30.44} \\ x = \frac{ - 800}{ - 30.44} \\ x = \frac{200}{761} [/tex]
