If the equation 4x^2-x-1=0a n d3x^2+(lam...

If the equation `4x^2-x-1=0a n d3x^2+(lambda+mu)x+lambda-mu=0` have a root common, then the rational values of `lambdaa n dmu` are a.`lambda=(-3)/4` b. `lambda=0` c. `mu=3/4` b.`mu=0`

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