If the equation `4x^(2)-3kx+1=0` has equal roots then k=?A. `+-(2)/(3) – InterviewSolution

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1.	If the equation `4x^(2)-3kx+1=0` has equal roots then k=?A. `+-(2)/(3)`B. `+-(1)/(3)`C. `+-(3)/(4)`D. `+-(4)/(3)`
Answer» Correct Answer - D Since the roots are equal, we hae D=0. `:." "9k^(2)-16=0impliesk^(2)=(16)/(9)impliesk=(4)/(3)" or "k=(-4)/(3).`

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