If roots of the equation$ { px }^{ 2 }+2qx+r=0$ and$ { qx }^{ 2 }-2\quad \sqrt { pr } x+q=0$ are simultanously real , the
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If roots of the equation$ { px }^{ 2 }+2qx+r=0$ and$ { qx }^{ 2 }-2\quad \sqrt { pr } x+q=0$ are simultanously real , the