• #### 3x3 Determinants - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the determinant of a 3x3 square matrix using minors by expanding along the top row.
• #### 45-45-90 Triangles - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to find the hypotenuse in a 45-45-90 triangle given a leg with a length that contains a square root.
• #### 45-45-90 Triangles - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the hypotenuse in a 45-45-90 triangle given a leg with a length that contains a square root.
• #### 45-45-90 Triangles - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 45-45-90 triangles.
• #### Finding the Roots of a Complex Number - Problem 2

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to use DeMoivre's Theorem to compute the square roots of i.
• #### Overview of the Different Methods of Solving a Quadratic Equation - Problem 2

##### Math›Algebra 2›Quadratic Equations and Inequalities
How to solve a quadratic using the square root property.
• #### 3x3 Determinants - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the determinant of a 3x3 square matrix using minors by expanding along any row or column.
• #### 45-45-90 Triangles - Problem 3

##### Math›Geometry›Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 45-45-90 triangles.
• #### Simplifying Radical Expressions - Problem 6

Introduction to radicals, including notation, square root, cube roots, principal roots, and square roots of perfect squares.
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• #### Multiplying Polynomials: Special Cases - Concept

##### Math›Algebra›Polynomials
How to recognize special products of polynomials.
• #### Dividing Radicals and Rationalizing the Denominator - Problem 8

Finding the square root of fractions whether either the numerator, denominator, or both are not perfect squares.
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• #### Graphing Radical Equations using a Table - Problem 4

Making a table of values for a radical function based on trying to create the square roots of perfect square numbers.
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• #### Overview of the Different Methods of Solving a Quadratic Equation - Concept

##### Math›Algebra 2›Quadratic Equations and Inequalities
How to know which method to use when solving a quadratic equation.
• #### Overview of the Different Methods of Solving a Quadratic Equation - Problem 5

##### Math›Algebra 2›Quadratic Equations and Inequalities
Quadratic equations solved using multiple methods including taking square roots, the quadratic formula, factoring, and completing the square
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• #### Binomial Theorem - Concept

##### Math›Algebra 2›Polynomials
How to define factorial expressions used in the binomial theorem.
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square root
• #### The Circle - Problem 11

##### Math›Algebra 2›Conic Sections
How to transform a general form circle to standard form by completing the square.
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• #### The Circle - Problem 11

##### Math›Precalculus›Conic Sections
How to transform a general form circle to standard form by completing the square.
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• #### Transformations of a Hyperbola - Problem 5

##### Math›Precalculus›Conic Sections
Complete the square to move from general to standard form of a hyperbola.
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• #### Geometric Sequences - Problem 12

##### Math›Precalculus›Sequences and Series
Geometric means as the square root of the product of the terms on either side.
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• #### Multiplying Polynomials - Problem 3

##### Math›Algebra 2›Polynomials
Using difference of perfect squares as a shortcut in multiplying a series of binomials.
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