Algebra Polynomials Practice Test Results

Question 1
78% answer correctly
(n + 2)(n + 4) = ?
\\(n^2\\) + 6n + 8
\\(n^2\\) + 6n - 8
\\(n^2\\) - 8n - 8
\\(n^2\\) - 6n + 8
Question 2
67% answer correctly
If n = 5 what`s the value of \\(3n^2 - 9n + 17\\) ?
13
47
120
30
Question 3
58% answer correctly
\\((x - 4)(x^2 + 7x + 3)\\) = ?
\\(x^3 + 3x^2 + 25x - 11\\)
\\(x^3 + 6x^2 -25x - 12\\)
\\(x^3 + 3x^2 -25x + 12\\)
\\(x^3 + 3x^2 -25x - 12\\)