find the value of k if 8k+4
answer both
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nth term=>
Tn=a+(n-1)d
a=8k+4
d=6k-2-(8k+4)
=6k-2-8k-4
=-2k-6
n=3
T3=2k-7
8k+4+{(3-1)×(-2k-6)}=2k-7
8k+4+{2×(-2k-6)}=2k-7
8k-2k-4k-12=-7
2k=-7+12
2k=5
K=5/2
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