The sum of this geometric series with 7 terms: 2+6++1456 is

answer:

the sum of the terms in a geometric sequence is obtained through the equation below,  

                                s = (a1)(1 - r^n)/(1 - r)

substituting,

                                s = 2(1 - 3^7) / ( 1 - 3) = 2186

thus, the sum of the first 7 terms in the geometric sequence is equal to 2186.

i am 58% wrong, but i am pretty sure this is it.

best of luck to you!

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.