arrow
arrow
arrow
The quadratic equation 3x² - 4√3 x + 4 = 0 has:
Question

The quadratic equation 3x² - 4√3 x + 4 = 0 has:

A.

two imaginary roots

B.

two distinct real roots

C.

no real roots

D.

two equal real roots

Correct option is D

Given:

3x243x+4=03x^2 - 4\sqrt{3}x + 4 = 0​​

Concept Used:

Nature of roots of a quadratic equation is determined using the discriminant D

D > 0: Two distinct real roots

D = 0: Two equal real roots

D < 0: Complex (non-real) roots

Formula Used:

D=b24acD = b^2 - 4ac​​

Solution:

a=3,b=43,c=4a = 3, b = -4\sqrt{3}, c = 4​​

D = (43)24×3×4=4848=0(-4\sqrt{3})^2 - 4 \times 3 \times 4 = 48 - 48 = 0

Since D = 0, the equation has two equal real roots.

test-prime-package

Access ‘RRB Group D’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
191k+ students have already unlocked exclusive benefits with Test Prime!

Free Tests

Free
Must Attempt

RRB Technician Gr.III Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

General Science Section Test 01

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon40 Marks
  • timerIcon20 Mins
languageIcon English
Free
Must Attempt

RRB ALP CBT-I Mock 1

languageIcon English
  • pdpQsnIcon75 Questions
  • pdpsheetsIcon75 Marks
  • timerIcon60 Mins
languageIcon English