Question

Q 12)
Write an expression
for the nth term of
the sequence. -5,

-2,3, 10, 19, ...
A) an= n2-6
B) an= n2-7
C) an= n2-8
Di an= n2-9
Choose Answer​

Answer 1

Step-by-step explanation:

Given A.P -5,-2,3,10,19.

t1=-5 t2=-2 t3=3 t4=10 t5=19....

t2-t1=-2-(-5)=3...

d=3..

tn=a+(n-1)d

tn=-5+(n-1)3

tn= 5+3n-3

tn=3n-2

nth term= 3n-2