Answer :

To simplify the radical equation [tex]\(\sqrt{n + 9} = 1\)[/tex], follow these steps:

1. Eliminate the square root:
To remove the square root, square both sides of the equation. When you square both sides, you get:
[tex]\[ (\sqrt{n + 9})^2 = 1^2 \][/tex]

2. Simplify:
Squaring the left side of the equation eliminates the square root:
[tex]\[ n + 9 = 1 \][/tex]

3. Solve for [tex]\( n \)[/tex]:
To isolate [tex]\( n \)[/tex], subtract 9 from both sides of the equation:
[tex]\[ n + 9 - 9 = 1 - 9 \][/tex]
[tex]\[ n = -8 \][/tex]

Thus, the solution to the equation [tex]\(\sqrt{n + 9} = 1\)[/tex] is [tex]\( n = -8 \)[/tex].