Algebra Polynomials Practice Test Results

Question 1
78% answer correctly
(n + 2)(n + 4) = ?
\\(n^2\\) - 8n - 8
\\(n^2\\) + 6n - 8
\\(n^2\\) + 6n + 8
\\(n^2\\) - 6n + 8
Question 2
67% answer correctly
If n = 5 what`s the value of \\(3n^2 - 9n + 17\\) ?
30
120
47
13
Question 3
64% answer correctly
\\((x - 5)(x^2 + 9x + 6)\\) = ?
\\(x^3 + 4x^2 -39x - 30\\)
\\(x^3 + 4x^2 + 39x - 29\\)
\\(x^3 + 8x^2 -39x - 30\\)
\\(x^3 + 4x^2 -39x + 30\\)