X2-3x-10=0 X2+7x+10=0 X2-5x-24=0 X2-8x+15=0 3x2-13x+4=0
1 answer:
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Answer:
Step-by-step explanation:
A geometric sequence is a list of numbers having a common ratio. Each term after the first is gotten by multiplying the previous one by the common ratio.
The first term is denoted by a and the common ratio is denoted by r.
A geometric sequence has the form:
a, ar, ar², ar³, . . .
The nth term of a geometric sequence is
Therefore the sum of the first n terms is:
Given a geometric series with a first term of 3 and a common ratio of 10/9, the sum of the first n terms is:
Answer:
A
Step-by-step explanation:
note that i =
given
- 1 + 2i
= - 1 +
= - 1 +