Algebra Polynomials Practice Test Results

Question 1
87% answer correctly
(n + 6)(n + 4) = ?
\\(n^2\\) - 10n + 24
\\(n^2\\) + 10n + 24
\\(n^2\\) - 10n - 24
\\(n^2\\) + 10n - 24
Question 2
64% answer correctly
If n = 2 what`s the value of \\(4n^2 - 4n + 18\\) ?
26
24
8
-10
Question 3
63% answer correctly
\\((x - 4)(x^2 + 6x + 4)\\) = ?
\\(x^3 + 2x^2 -20x + 16\\)
\\(x^3 + 4x^2 -20x - 16\\)
\\(x^3 + 2x^2 -20x - 16\\)
\\(x^3 + 2x^2 + 20x - 15\\)