quadratic formula 92 videos

The Midpoint and Distance Formulas in 3D
Precalculus Vectors and Parametric Equations
How to derive the formula for the midpoint of a segment in three dimensions.
position vectors the vector from point a to point b the midpoint formula vector addition scalar multiplication 
Dilations of Quadratic Graphs
Algebra Quadratic Equations and Functions
How to graph parabolas that are wide or skinny or upside down without making a table of values.
dilation vertex quadratic equation coefficient 
Dilations of Quadratic Graphs
Algebra 2 Quadratic Equations and Inequalities
How to graph parabolas that are wide or skinny or upside down without making a table of values.
dilation vertex quadratic equation coefficient 
Graphing Quadratic Equations
Algebra Quadratic Equations and Functions
How to graph a quadratic equation by hand.
x intercepts y intercepts vertex axis of symmetry discriminant substitute 
Solving Quadratic Equations by Factoring
Algebra Quadratic Equations and Functions
How to solve quadratic equations by factoring.
zero product property factoring 
Solving Quadratic Equations by Factoring
Algebra 2 Quadratic Equations and Inequalities
How to solve quadratic equations by factoring.
zero product property factoring 
Solving a Quadratic Inequality using a Sign Chart
Algebra 2 Quadratic Equations and Inequalities
How to solve a quadratic inequality using a sign chart.
sign number line sign chart less than greater than quadratic inequality 
Vertical and Horizontal Shifts of Quadratic Graphs
Algebra Quadratic Equations and Functions
How to graph parabolas with horizontal and vertical shifts without making a table of values.
shift vertex quadratic equation 
Other Forms of the Cosine DoubleAngle Formula
Trigonometry Advanced Trigonometry
How to derive two more cosine doubleangle formulas.
the Pythagorean identity the cosine double angle formulas 
Other Forms of the Cosine DoubleAngle Formula
Precalculus Advanced Trigonometry
How to derive two more cosine doubleangle formulas.
the Pythagorean identity the cosine double angle formulas 
Applications of Quadratic Equations
Algebra Quadratic Equations and Functions
How to approach word problems that involve quadratic equations.
projectile height geometry word problem vertex 
Finding the Maximum or Minimum of a Quadratic
Algebra 2 Quadratic Equations and Inequalities
How to use the shape of a parabola to find a maximum or minimum.
maximum max minimum min vertex quadratic 
Formulas
PreAlgebra Solving Equations and Inequalities
The importance of solving literal equations for a given variable

The HalfAngle Identities
Trigonometry Advanced Trigonometry
How to use the power reduction formulas to derive the halfangle formulas.
the power reduction formulas the half angle formulas quadrants 
The HalfAngle Identities
Precalculus Advanced Trigonometry
How to use the power reduction formulas to derive the halfangle formulas.
the power reduction formulas the half angle formulas quadrants 
The Discriminant of a Quadratic Equation
Algebra 2 Quadratic Equations and Inequalities
How to use the discriminant to know the number and type of solutions to a quadratic.
discriminant type of solution number of solutions type of roots number of roots 
Conic Section Formulas
Algebra 2 Conic Sections
How to identify a conic section by its formula.
parabola circle ellipse hyperbola center focus 
Conic Section Formulas
Precalculus Conic Sections
How to identify a conic section by its formula.
parabola circle ellipse hyperbola center focus 
The Distance Formula in Polar Coordinates
Precalculus Polar Coordinates and Complex Numbers
How to derive the distance formula for polar coordinates.
polar coordinates the law of cosines triangles 
Change of Base Formula
Algebra 2 Inverse, Exponential and Logarithmic Functions
How to use the change of base formula for logs to evaluate a logarithmic statement.
change of base log logarithm