Question

If n-2,4n-1,5n+2 are in a. p find n?

Answer 1

ap=n-2,4n-1,5n+2
a=n-2
d=(4n-1)-(n-1)
  =(4n-1)-n+1
  =-4n^2+n+4n-1
  =4n^2-5n+1
=4n^2-4n-n+1
=4n(n-1)-1(n-1)
n=1/4    n=1

Answer 2

ap=n-2,4n-1,5n+2
a=n-2
d=(4n-1)-(n-1)
  =(4n-1)-n+1
  =-4n^2+n+4n-1
  =4n^2-5n+1
=4n^2-4n-n+1
=4n(n-1)-1(n-1)
n=1/4    n=1
hope it helps!!