Book: RS Aggarwal - Mathematics
Chapter: 2. Polynomials
Subject: Maths - Class 10th
Q. No. 24 of Exercise 2C
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24
If α and β are the zeros of the polynomial f(x) = x2 + x – 2, find the value of 
It is given in the question that,
Zeros of the polynomial x2 + x - 2 are 
Now by using the relationship between the zeros of the quadratic polynomial we have:
Sum of zeros = 
and product of zeros = 
= 
and 
= - 1 and 
Now, we have:
= (
)2
= 
= 
= 
= 
(
) = 
