Choose Any Options answer with explained ??
If the roots of a quardiatic equation #x^3-px^2 +qx-r =0# are in Arithmetic Progression (AP) Then which is the correct relation -
A) #2p^3=9pq-27r#
B) #2q^3=9pq-27r#
C) #p^3 = 9pq-27r#
D) #2p^3=9pq+27r#
If the roots of a quardiatic equation
A)
B)
C)
D)
1 Answer
Explanation:
We have cubic eqn.
Let ,
So ,
Given that ,
From
From
From (4)
Using
Note :
If