Question 1172534
What is the common ratio and the 3 terms in the sequence after the last on given -1,-2,-4,-8

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Hi 
{{{a[n] = (a[1])*r^(n-1)}}}
r = 2
For ex:
{{{a[5] = (-1)*2^(4)}}}
{{{a[6] = (-1)*2^(5)}}}
{{{a[7] = (-1)*2^(6)}}}
 -1,-2,-4,-8, -16, -32 , -64 , ...
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