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The quadratic equation x+ bx + 4 = 0 will have real roots, if 
  • a)
    Only b ≤ -4
  • b)
    Only b ≥ 4
  • c)
    -4 < b < 4
  • d)
    b ≤ 4, b ≥ 4
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The quadratic equation x2+ bx + 4 = 0 will have real roots, ifa)Only b...
given that the equation 
x2 + bx + 4 = 0 have real roots, if discriminate (D) = B2 - 4AC ≥ 0

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The quadratic equation x2+ bx + 4 = 0 will have real roots, ifa)Only b ≤ -4b)Only b ≥ 4c)-4 < b < 4d)b ≤ 4, b ≥ 4Correct answer is option 'D'. Can you explain this answer?
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