Download Quadratic Functions

6/19/2015
Analytical Geometry
brand of calculator you can search the internet or read the user manual for instructions on how to find the zero of a
graph.
Using Square Roots to Solve Quadratic Equations
Do you remember learning about square roots? Positive numbers have both a positive square root and negative
square root. The positive square root is called the principle square root.
You cannot take the square root of a negative number. The square root symbol is called a radical. The number
under the square root is called the radicand.
Using square roots is another method that can be used to solve quadratic equations.
Solving Quadratic Equations (Steps)
1. Determine what is being squared in the equation.
2. Get the squared item by itself.
3. Take the square root of both sides (do not forget the square root is both positive and negative).
Example: Solve for the variable.
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