If the zeros of the polynomial 
are in A.P., find them.
Let 
are the zeros of the given polynomial.
Sum of the zeros = 
⇒ 
= 
⇒ 
= 
= 
⇒ 
=
= 
= 
= 15
= 15
= 15
On substituting 
=
= 15
= 
= 
= ±
= 
= 
3
If the zeros of the polynomial are in A.P., find them.
Let are the zeros of the given polynomial.
Sum of the zeros =
⇒ =
⇒ = =
⇒ =
= = = 15
= 15
= 15
On substituting =
= 15
= =
= ±
=
=