Evaluate the following limits. If needed, enter oo for ∞\displaystyle \infty and -oo for −∞\displaystyle -\infty.

(a)lim⁡x→∞5x3−11x2−11x11−3x−4x3=\displaystyle \lim_{{{x}\rightarrow\infty}}{\frac{{{5}{x}^{{3}}-{11}{x}^{{2}}-{11}{x}}}{{{11}-{3}{x}-{4}{x}^{{3}}}}}=
 

(b)lim⁡x→−∞5x3−11x2−11x11−3x−4x3=\displaystyle \lim_{{{x}\rightarrow-\infty}}{\frac{{{5}{x}^{{3}}-{11}{x}^{{2}}-{11}{x}}}{{{11}-{3}{x}-{4}{x}^{{3}}}}}=
 

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