p(q-r)x2 + q(r-p)x + r(p-q)=0 has equal roots then prove 1/p +1/r = 2/q #wordproblems #10th #maths

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If the roots of the equation `p(q-r)x^2+q(r-p)x+r(p-q)=0` be equal, show that `1/p+1/r=2/q`.If the roots of the equation `p(q-r)x^2+q(r-p)x+r(p-q)=0` be equal, show that `1/p+1/r=2/q`.
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