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Question
Without solving the following quadratic equation Find the value of p for which the roots are equal
`px^2 - 4x + 3 = 0`
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Solution
`px^2 - 4x + 3 = 0`
Here a = p, b = -4 and c = 3
Given equation has equal roots then D = 0
`=> b^2 - 4ac = 0`
`=> [-4]^2 - 4(p)(3) = 0`
`=> 16 - 12p = 0`
`=> -12p = -16`
`=> p = (-16)/(-12) = 4/3`
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