Practice problem
Solve for xxx in the equation x−1−x+1+1=0\sqrt{x-1} - \sqrt{x+1} + 1 = 0x−1−x+1+1=0. Express your answer as a common fraction.
45\frac{4}{5}54
54\frac{5}{4}45
58\frac{5}{8}85
52\frac{5}{2}25
Type a concept, like “slope” or “photosynthesis”.
