SATHEE: Complex Numbers And Quadratic Equations question 782

Complex Numbers And Quadratic Equations question 782

Question: If the roots of $ 4x^{2}+px+9=0 $ are equal, then absolute value of p is [MP PET 1995]

Options:

A) 144

B) 12

C) $ -12 $

D) $ \pm 12 $

Show Answer

Answer:

Correct Answer: D

Solution:

Accordingly, $ p^{2}=144\Rightarrow p=\pm 12 $ .

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Complex Numbers And Quadratic Equations question 782

Question: If the roots of $ 4x^{2}+px+9=0 $ are equal, then absolute value of p is [MP PET 1995]

Options:

Answer:

Solution:

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