SAT Math: Advanced Math

What is the first step in solving the radical equation $\sqrt{x} + 2 = 5$?

To isolate the radical in the equation $2\sqrt{3x - 1} - 3 = 7$, what is the correct first step?

What is the first step to isolate the radical in the equation $\frac{\sqrt{x+5}}{2} + 1 = x$?

Solve for $x$: $\sqrt{x} = 4$

What power should you raise both sides of the equation $\sqrt[3]{2x+1} = 3$ to, in order to eliminate the radical?

Solve for $x$: $\sqrt{x+1} = \sqrt{2x-5}$

Given the equation $\sqrt{x+3} = x - 3$, is $x = 6$ a valid solution or an extraneous solution?

What is the least common denominator (LCD) of the equation $\frac{1}{x} + \frac{1}{2} = 1$?

What is the least common denominator (LCD) of the equation $\frac{2}{x+1} + \frac{3}{x} = 1$?

What is the least common denominator (LCD) of the equation $\frac{1}{x^2 - 1} + \frac{1}{x+1} = 1$?