If α and β are the zeros of the quadratic polynomial 
, find the value of 
.
Let 
and β are the roots of the given eqn
Sum of the roots = 
= 
= 
= -1
Product of the roots = 
= 
= 
= -2
= 
= 
[Using (a + b)2 = a2 + b2 + 2ab and (a - b)2 = a2 + b2 - 2ab]
⇒ 
= 
= 
9