-4n3 + 8n2 - 4n + 7
5n-2+2=4n 5n=4n n=0
t(n) = 3n2 + 5n + 1 for n = 1, 2, 3, ...
5n - 4 = 10n + 6-5n = 10n = -2
5n+6=(-4) n= (-2)
5n+15 = 25 5n = 25-15 5n = 10 n = 2
5m-5n+5m+5n When simplified: 10m
5n+6=-45n=-10n=-2
A - B = -3n + 2 - (5n - 7) = -3n + 2 - 5n + 7 = 9 - 8n
68
8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4
That factors to (2n + 1)(n + 2)