\(B=6^3.\left(-\dfrac{1}{3}\right)^3-17^5:17^3-2.\left(-\dfrac{1}{3}\right)+1\)
\(=216.\left(-\dfrac{1}{27}\right)-17^2-\left(-\dfrac{2}{3}\right)+1\)
\(=\left(-8\right)-289+\dfrac{2}{3}+1\)
\(=\left(-297\right)+1+\dfrac{2}{3}\)
\(=-\dfrac{890}{3}\)