मराठी

If the sum of the roots of the equation kx^2 + 2x + 3k = 0 is equal to their product then the value of k is ______. (a) 1/3 (b) (–1)/3 (c) 2/3 (d) (–2)/3

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प्रश्न

If the sum of the roots of the equation kx2 + 2x + 3k = 0 is equal to their product then the value of k is ______.

पर्याय

  • `1/3`

  • `(-1)/3`

  • `2/3`

  • `(-2)/3`

MCQ
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उत्तर

If the sum of the roots of the equation kx2 + 2x + 3k = 0 is equal to their product then the value of k is `underlinebb((-2)/3)`.

Explanation:

Given:

kx2 + 2x + 3k = 0

Sum of the roots = Product of the roots 

⇒ `(-2)/k = (3k)/k` 

⇒ 3k = –2 

⇒ `k = (-2)/3`

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पाठ 4: Quadratic Equations - TEST YOURSELF [पृष्ठ २३८]

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आर. एस. अग्रवाल Mathematics [English] Class 10
पाठ 4 Quadratic Equations
TEST YOURSELF | Q 11. | पृष्ठ २३८
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