### Home > CCA > Chapter 11 > Lesson 11.3.3 > Problem 11-100

11-100.

Solve the quadratics below by completing the square. Leave your solutions in exact form. Homework Help ✎

*x*^{2}− 6*x*− 12 = 0*x*^{2}− 3 = 4*x*

Add 21 to both sides.

Perfect square form:(*x* − 3)^{2} = 21

Change the quadratic into standard form before trying to change it to perfect square form.

Perfect square form: (*x* − 2)^{2} = 7