Algebra
# Radical Expressions and Equations

Solve the equation $\sqrt{ x+ 15 } = 9.$

Solve the equation

$\sqrt{ 6 x + 27 } = x.$

Solve for $x$:

$\sqrt{x+141} - \sqrt{ 5x+85} = 2$

If $\frac{\sqrt{180+x}}{\sqrt{29}}=3,$ what is the value of $x$?