Question

SECTION- A
52-10
1. Find the zeroes of the quadratic polynomial 5t? + 12+ + 7 and verify the relationship
between the zeroes and the

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Answer 1

Answer

5t

2

+12t+7=0

5t

2

+5t+7t+7=0

5t(t+1)+7(t+1)=0

(5t+7)(t+1)=0

⇒t=

5

−7

and t=−1

∴ sum of roots is

5

−7

−1=

5

−12

=

a

−b

product of roots = (

5

−7

)(−1)=

5

7

=

a

c

Hence verified