determine k so that k²+4k+8,2k²+3k+6,3k²+4k+4 are the three consecutive terms of an AP
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Given that,
k²+4k+8, 2k²+3k+6 and 3k²+4k+4 are the 3 consecutive terms of an AP,
Now,
We know that,
a2-a1=a3-a2
Here,
a1=k²+4k+8, a2=2k²+3k+6, a3=3k²+4k+4
2k²+3k+6-(k²+4k+8)=3k²+4k+4-(2k²+3k+6)
2k²+3k+6-k²-4k-8=3k²+4k+4-2k²-3k-6
k²-k-2=k²+k-2
k²-k²-k-k-2+2=0
-2k=0
k=0
Thus, the value of k is 0.
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