A. $\sqrt 2x = -x$ B. $\ 2x = x^2$ C. $\ x = 2, x = 0$ D. $\ x = 0$
Work Step by Step
Letter A asks to isolate the radical, therefore you must subtract the "x" to the other side. Letter B asks to square both sides. Squaring a radical leaves what's left inside the radical. For letter C, subtract "2x" to the other side and from there, you will have an equation to solve. "x" will equal 2 and 0. For letter D, plug in both solutions, however, only 0 will make the statement true.