Question

the nth term of an AP 2,7,12, ​

Answer 1

Answer:

tn=a+(n-1)d

12 =2+(n-1)5

12=2+5n-5

12=-3+5n

15=5n

n=3

Answer 2

Answer:

nth term= 5n-3

Step-by-step explanation:

a1=2, a2=7

d=7-2=5

an=a+(n-1)d

an=2+(n-1)5

an=2+5n-5

an=5n-3