Algebra Polynomials Practice Test Results

Question 1
57% answer correctly
\\((x - 3)(x^2 + 6x + 3)\\) = ?
\\(x^3 + 3x^2 -15x - 9\\)
\\(x^3 + 3x^2 + 15x - 8\\)
\\(x^3 + 6x^2 -15x - 9\\)
\\(x^3 + 3x^2 -15x + 9\\)
Question 2
85% answer correctly
(n + 9)(n + 6) = ?
\\(n^2\\) + 15n + 54
\\(n^2\\) + 54n - 54
\\(n^2\\) - 54n + 54
\\(n^2\\) - 54n - 54
Question 3
64% answer correctly
If n = 2 what`s the value of \\(4n^2 - 4n + 18\\) ?
-10
26
8
24