C-11-Q078mediumsingle_mcq1+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 হলে p2−2px+1=?p^2 - \dfrac{2p}{x} + 1 = ?p2−x2p+1=?a000b111c−1-1−1d