-2,_,_,-16,-32,-64 What Is The 2nd Term And The 3rd Term?

-2,_,_,-16,-32,-64 WHAT IS THE 2ND TERM AND THE 3RD TERM?

 

Answer:

a1=-2

an=-64

n=6

Geometric sequence

an=a1(r)ⁿ⁻¹

-64=(-2)(r)⁶⁻¹

−64=−2r⁵

2r⁵−64=0

2r⁵=64

r⁵=32

⁵√32=r

r=2

find a2

a2=(-2)(2)²⁻¹

a2=−2(2¹)

a2=(−2)(2)

a2=−4

a3=−2(2³⁻¹)

a3=−2(2²)

a3=(−2)(4)

a3=−8

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