Mathematics

Problem

If the quadratic equation

4x^2 - 2x - m = 0

and

4p(q-r)x^2 - 2q(r-p)x + r(p-q) = 0

have a common root such that second equation has equal roots then the value of

m

will be: (a) 0 (b) 1 (c) 2 (d) 3