Suppose there is a sequence a1, a2, a3, a4 ...
Such that the sum of the first n terms is 5n2+4√3n+4
Find the sum a5+a6+a7
Ty!
See https://web2.0calc.com/questions/suppose-there-exists-a-sequence-such-that-the-sum#r2
Thanks!
+89 
