SubArea: Expressions with powers and rootsLevel: CProject ID: 9000079209Source Problem: 2010004809Accepted: 1Clonable: 1Easy: 0Evaluate the following expression at \(x = 4\). \[ \frac{x^{-\frac{1} {2} }} {x^{-2} - x^{-1}} \]\(-\frac{8} {3}\)\(\frac{31} {3} \)\(\frac{8} {3}\)\(6\)
