Question

if the Nth term of a sequence is 5n+2 ,then finds its , first term if the Nth term of a sequence is 5n+2 ,then finds its , first term and common difference common difference

Answer 1

Answer:

$an = 5n + 2 \\ a1 = 5 \times 1 + 2 \\ a1 = 7 \\ a2 = 5 \times 2 + 2 \\ a2 = 12 \\ common \: difference = a2 - a1 \\ = 12 - 7 \\ = 5$