Algebra Practice Test Results

Question 1
78% answer correctly
Solve this equation for a: \\(a = \\frac{b^6}{b^2}\\)
-4b
\\(b^{-4}\\)
\\(b^4\\)
\\(b^{\\frac{2}{6}}\\)
Question 2
73% answer correctly
What`s the greatest common factor of 64 and 56?
8
120
4
16
Question 3
53% answer correctly
Simplify \\(\\sqrt{180}\\)
\\(5\\sqrt{180}\\)
\\(6\\sqrt{180}\\)
\\(5\\sqrt{6}\\)
\\(6\\sqrt{5}\\)