Algebra Polynomials Practice Test Results

Question 1
79% answer correctly
(n + 5)(n + 9) = ?
\\(n^2\\) + 14n - 45
\\(n^2\\) - 45n + 45
\\(n^2\\) - 14n - 45
\\(n^2\\) + 14n + 45
Question 2
81% answer correctly
(d + f)(r + s) = ?
2(dr \\(\\times\\) ds \\(\\times\\) fr \\(\\times\\) fs)
2(dr + ds + fr + fs)
2dr \\(\\times\\) 2ds \\(\\times\\) 2fr \\(\\times\\) 2fs
dr + ds + fr + fs
Question 3
89% answer correctly
(n + 2)(n + 2) = ?
\\(n^2\\) - 4n + 4
\\(n^2\\) + 4n + 4
\\(n^2\\) - 4n - 4
\\(n^2\\) - 4n + 4