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find k so that the terms k-5, k+1 and 4k-2 form a geometric sequence

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MariaCassandraviz
k-5=0
k=5

k+1=0
k = -1

4k-2=0
4k=2
4k=2 all over 4 (Divided by 4 to cancel the 4 on the "k")
k= 2/4 or 1/2