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Completing the Square

Quadratic functions have the standard form of ax^2 +bx +c  where a, b, and c are known values. Changing the form to a(x+h)^2 +k is called the vertex form by completing the square.  There are three steps. Step 1: Isolate the constant, c Step 2: Make the leading coefficient a =1 by dividing the first...

Solving Quadratic Equations by Factoring

To solve equations, there are several ways.  By factoring, completing the square, the formula, or graphing, etc.- However, all methods start with setting the equation equal to zero, which is very important. I’d like to show the method by factoring in this video. There are three types of solutions, one solution which is often called double root. Two solutions...

Factoring

In this video,  I ‘d like to show some examples of factoring method. First, always check to see if there are common factors in any type of expressions.   I showed three types of formulas in this video,difference of two squares, quadratic trinomials, and perfect square trinomials. However, we can use the cross method for all...
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