avagracegirlp17zx2
22.07.2020 •
Mathematics
The nth term of a sequence is n^2 -n-2 .find the sum of the first and third terms
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Ответ:
2
Step-by-step explanation:
substitute n=1 and n=3 in the given equation
1 st term is (1)^2-1-2 = 1 -1 -2 = -2
3rd term is (3)^2-3-2 = 9-3-2=4
sum of 1st and 3rd term is -2 + 4 = 2
Ответ:
So Im basicaly just replying to get points sorry
Look i sure someone will answer it soon good luck buddy I have faith in you
Step-by-step explanation: