Algebra Polynomials Practice Test Results

Question 1
67% answer correctly
If n = 5 what`s the value of \\(3n^2 - 9n + 17\\) ?
47
30
13
120
Question 2
79% answer correctly
(n + 5)(n + 9) = ?
\\(n^2\\) + 14n + 45
\\(n^2\\) - 45n + 45
\\(n^2\\) - 14n - 45
\\(n^2\\) + 14n - 45
Question 3
64% answer correctly
\\((x - 5)(x^2 + 9x + 6)\\) = ?
\\(x^3 + 8x^2 -39x - 30\\)
\\(x^3 + 4x^2 -39x - 30\\)
\\(x^3 + 4x^2 -39x + 30\\)
\\(x^3 + 4x^2 + 39x - 29\\)