Question

find the following term of k for which of the following term are in an ap 2 k + 1 , k^2 + k+1 ,3k ^2 - 3 k + 3​

Answer 1

Answer:

Step-by-step explanation:

if the are in ap the have the same common difference

=k^2+k+1-(2k+1)=3k ^2 - 3 k + 3​-(k^2 + k+1 )

=k^2-k=2k^2-4k+2

k^2-3k+2=0

(k-1)(k-2)=0

=k=1,2