3 years ago

Write the explicit formula for the geometric sequence. a1 = -5 a2 = 20 a3 = -80

Mathematics

1 answer:

liq [111]3 years ago

6 0

An = a1 * r^(n-1)
a1 = first term = -5
r = common ratio = -4

so ur formula is : an = -5 * -4^(n-1) <==

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