1.

Find the value of p for which the quadratic equation `4x^2+px+3=0` has equal roots

Answer» Correct Answer - `p=4sqrt(3)" or "p=-4sqrt(3)`
For real and equal roots, we must have D=0.
`:." "D=0impliesp^(2)-48=0impliesp^(2)=48impliesp=+-sqrt(48)impliesp=4sqrt(3)" or "-4sqrt(3).`


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