Book: RD Sharma - Mathematics
Chapter: 2. Polynomials
Subject: Maths - Class 10th
Q. No. 1 of Exercise 2.2
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1
Verify that the numbers given along side of the cubic polynomials below are their zeros. Also, verify the relationship between the zeros and coefficients in each case:
(i) 
(ii) 
(i) 
= 
= 
= 0
= 
= 0
Let 
= 
; β=1; γ=-2
β + γ = 
= 
= 
β+ βγ + γ
= 
= 
= 
βγ = 
= -1 = 
(ii) 
= 
= 
= 0
= 
= 0
Let 
=2; β=1; γ=1
β + γ = 
= 4 = 
β+ βγ + γ
=
= 
βγ =
= 2 = 
are in A.P., find them.
may be in A.P.
are in A.P., prove that 
.
are in A.P., find the value of k.
