English

If α and β are the zeros of 2x^2 + 5x – 9 then the value of αβ is ______.

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Question

If α and β are the zeros of 2x2 + 5x – 9 then the value of αβ is ______.

Options

  • `(-5)/2`

  • `5/2`

  • `(-9)/2`

  • `9/2`

MCQ
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Solution

If α and β are the zeros of 2x2 + 5x – 9 then the value of αβ is `underlinebb((-9)/2)`.

Explanation:

For ax2 + bx + c, we have `αβ = c/a`.

For 2x2 + 5x – 9, we have `αβ = (-9)/2`.

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Chapter 2: Polynomials - MULTIPLE-CHOICE QUESTIONS (MCQ) [Page 70]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 2 Polynomials
MULTIPLE-CHOICE QUESTIONS (MCQ) | Q 13. | Page 70
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