If 2x+ 4(x - 3) < -2 - x < 2x - 1, then find the value of x.
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A root of equation ax2 + bx + c = 0 (where a, b and c are rational numbers) is 5 + 3√3. What is the value of (a2 + b2 + c2)/(a + b + c)?
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