Answer :
Given quadratic equation 4x2 + px + 3 = 0
Also given the equation has equal roots.
We know that a quadratic equation ax2 + bx + c = 0 has two equal roots, if b2 – 4ac = 0.
Comparing the given equation, we get
a = 4; b = p and c = 3
⇒ p2 – 4(4)(3) = 0
⇒ p2 – 48 = 0
⇒ p2 = 48
⇒ p = ± 4√3
∴ The values of p are 4√3 and -4√3.
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