\\(n^2\\) + 14n - 45 | |
\\(n^2\\) - 45n + 45 | |
\\(n^2\\) + 14n + 45 | |
\\(n^2\\) - 14n - 45 |
2(dr \\(\\times\\) ds \\(\\times\\) fr \\(\\times\\) fs) | |
2dr \\(\\times\\) 2ds \\(\\times\\) 2fr \\(\\times\\) 2fs | |
2(dr + ds + fr + fs) | |
dr + ds + fr + fs |
120 | |
13 | |
47 | |
30 |