Daily Archives: April 22, 2009

Algebra: Chapter 13, Lesson 3, page 586. Solving quadratics by completing the squares We can use the technique of completing the square to solve quadratic equations. Recall that the addition property allows us to add a number to both sides … Continue reading →

Algebra: Chapter 13, Lesson 2, page 580. More Solving Quadratic Equations Solve a quadratic equation of the form `ax^2 = k` Example: `-3x^2 + 7 = 0` becomes … `-3x^2 = -7` or `x^2=7/3` then `x = ±sqrt(7/3)`, don’t forget … Continue reading →