square root of ((x plus 1) divide by (1 minus x)) multiply by (1 minus x) multiply by (1 divide by (2 multiply by (1 minus x)) plus (x plus 1) divide by (2 multiply by (1 minus x) squared )) divide by (x plus 1) equally 0
square root of ((x plus one) divide by (one minus x)) multiply by (one minus x) multiply by (one divide by (two multiply by (one minus x)) plus (x plus one) divide by (two multiply by (one minus x) to the power of two)) divide by (x plus one) equally zero