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The value of the discriminant of the equation, sqrt(3)x^2 + 10x + 7sqrt(3) = 0 is ______.

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Question

The value of the discriminant of the equation, `sqrt(3)x^2 + 10x + 7sqrt(3) = 0` is ______.

Options

  • 4

  • 16

  • –16

  • –12

MCQ
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Solution

The value of the discriminant of the equation, `sqrt(3)x^2 + 10x + 7sqrt(3) = 0` is 16.

Explanation:

For ax2 + bx + c = 0, discriminant D = b2 – 4ac. 

Here a = `sqrt(3)`, b = 10, c = `7sqrt(3)`.

So, `D = 10^2 - 4(sqrt(3))(7sqrt(3))` 

= 100 – 4 × 7 × 3 

= 100 – 84

= 16

Since D > 0, the equation has two distinct real roots.

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Chapter 5: Quadratic Equation - EXERCISE 5C [Page 64]

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R.S. Aggarwal Mathematics [English] Class 10 ICSE
Chapter 5 Quadratic Equation
EXERCISE 5C | Q 33. | Page 64
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