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AHSME 1951 Problem 26

    In the equation x(x−1)−(m+1)(x−1)(m−1)=xm\frac {x(x - 1) - (m + 1)}{(x - 1)(m - 1)} = \frac {x}{m} the roots are equal when (A) m=1(B) m=12(C) m=0(D) m=−1(E) m=−12\textbf{(A)}\ m = 1 \textbf{(B)}\ m =\frac{1}{2} \textbf{(C)}\ m = 0 \textbf{(D)}\ m =-1 \textbf{(E)}\ m =-\frac{1}{2}

    Dataset text NuminaMath-1.5. Quoted with source.

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    -\frac{1}{2}

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