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Find the sum of the zeros and the product of zeros of a quadratic polynomial are −1/2 and –3 respectively. Write the polynomial.

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Questions

Find the sum of the zeros and the product of zeros of a quadratic polynomial are `-1/2` and –3 respectively. Write the polynomial.

The sum of zeros and the product of zeros of a quadratic polynomial are `(-1)/2` and –3 respectively. Write the polynomial. 

Sum
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Solution

We can find the quadratic polynomial if we know the sum of the roots and product of the roots by using the formula

x2 – (sum of the zeroes)x + product of zeroes

⇒ `x^2 - (-1/2)x + (-3)` 

⇒ `x^2 + 1/2x - 3` 

Hence, the required polynomial is `x^2 + 1/2x - 3`.

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Chapter 2: Polynomials - EXERCISE 2C [Page 66]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 2 Polynomials
EXERCISE 2C | Q 18. | Page 66

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