Absolute value equation

Solve the absolute value equation x2=3|x - 2| = 3 by reading it as the intersection of y=x2y = |x - 2| and y=3y = 3. Since x2=3|x - 2| = 3 means x2=3x - 2 = 3 or x2=3x - 2 = -3, the solutions are x=5x = 5 and x=1x = -1.

The two intersection points are therefore (5,3)(5, 3) and (1,3)(-1, 3), marked by the large dots. Because y=x2y = |x - 2| is a V-shape with its corner at x=2x = 2, it meets the horizontal line y=3y = 3 at two points.