Question

plz solve it on a paper
7th one​

Answer 1

Answer:

$\sqrt{x + 1} - \sqrt{x - 1} = 0 \\ \sqrt{x + 1} = \sqrt{x - 1} \\ x + 1 = x - 1 \\ 0 = 2 \\ \\ \\ \\ \\no \: solution$