Algebra Exponents and Roots Practice Test Results

Question 1
78% answer correctly
Solve this equation for a: \\(a = \\frac{b^6}{b^2}\\)
-4b
\\(b^{-4}\\)
\\(b^{\\frac{2}{6}}\\)
\\(b^4\\)
Question 2
47% answer correctly
What is the index in \\(\\sqrt[3]{125}\\) ?
125
5
3
\\(\\sqrt{ }\\)
Question 3
58% answer correctly
Simplify \\(\\sqrt{20}\\)
\\(5\\sqrt{2}\\)
\\(5\\sqrt{20}\\)
\\(2\\sqrt{5}\\)
\\(2\\sqrt{20}\\)