Question

find a quadratic polynomial whose zeroes are 1and-3 and the relation between the zero and polynomial?​

Answer 1

Answer:

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Answer 2

Answer:

Let the zeroes of the quadratic polynomial be α=1,β=−3

Then, α+β=1+(−3)=−2

αβ=1×(−3)=−3

Sum of zeroes =α+β=−2

Product of zeroes =αβ=−3

Then, the quadratic polynomial =x

2

−( sum of zeroes )x+ product of zeroes =x

2

−(−2)x+(−3)=x

2

+2x−3

Verification:

Sum of zeroes =α+β=1+(−3)=−2 or

=−

Coefficient of x

2

Coefficient of x

=−

1

(2)

=−2

Product of zeroes =αβ=(1)(−3)=−3 or

=

Coefficient of x

2

Constant term

=

1

−3

=−3

So, the relationship between the zeroes and the coefficients is verified.