C-11-Q093mediumsingle_mcqIf 1+x+1−x1+x−1−x=p\dfrac{\sqrt{1+x} + \sqrt{1-x}}{\sqrt{1+x} - \sqrt{1-x}} = p1+x−1−x1+x+1−x=p, then p2−2px+1=p^2 - \dfrac{2p}{x} + 1 =p2−x2p+1=a−1-1−1b000c111d