Решите уравнение: (x+3)^2=100.

\[(x + 3)^{2} = 100\]

\[x + 3 = 10\ \ \ \ \ \ \ \ \ \ x + 3 = - 10\]

\[x = 7\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = - 13.\]