Categoty :
elaine : Find the sum to n terms in the following series.
1 · 5 + 3 · 7 + 5 · 9 + . . .

: Find the sum to n terms in the following series.
1 · 5 + 3 · 7 + 5 · 9 + . . .
4n2 + 4n - 3#0#8n2 - 3n#0#n3(4n2 + 12n - 1)#0#4n3(n2 + 3n + 2) - 3#0#