<prompt> How would you solve for the roots of x2 - 4x 4 0?  <response>: To find the roots of the quadratic equation x2 - 4x 4 0, we can use the quadratic formula: x -b b2-4ac 2awhere a, b, and c are the coefficients of the quadratic equation, ax2 bx c 0. In this case, a 1, b -4, and c 4.Substituting these values into the quadratic formula, we get:x --4 -42-414 21 4 16-162 4 02 2So, there is only one root for this quadratic equation, which is x 2. 