Learning goals: Teacher Facing Comprehend that to “complete the square” is to determine the value of $c$ that will make the expression $x^2+bx+c$ a perfect square. Describe (orally and in writing) how to complete the square. Solve quadratic equations of the form $x^2+bx+c=0$ by rearranging terms and completing the square. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from Alg1.7 Quadratic Equations, Algebra 1.