matrices square matrices 55 videos

Square Matrices
Precalculus Systems of Linear Equations and Matrices
How to determine whether two matrices can be multiplied, and if so, what the dimensions of the product will be.
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Invertible Square Matrices and Determinants
Precalculus Systems of Linear Equations and Matrices
How to determine whether a square matrix is invertible using its determinant.
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Introduction to Matrices
Algebra 2 Matrices
How to talk about matrices.
matrix dimensions element row column 
The Inverse of a Square Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses.
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Augmented Matrices
Algebra 2 Matrices
How to use matrices to solve a system of linear equations.
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Solving Systems using Matrices
Algebra Solving Systems of Equations
How to use matrices to solve a system of equations.
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2x2 Determinants
Precalculus Systems of Linear Equations and Matrices
How to compute the determinant of a 2x2 square matrix.
square matrices determinant 2x2 determinant 
Completing the Square
Algebra Quadratic Equations and Functions
How to solve a quadratic equation by completing the square.
completing the square perfect square trinomial 
The Identity Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine the identity matrix of order n.
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Punnett Squares
Biology Mendelian Genetics
How to generate and use the Punnet squares.
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Estimating Square Roots
Algebra Radical Expressions and Equations
How to find square roots of integers.
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Difference of Perfect Squares
Algebra Factoring
How to recognize and factor a binomial that is the difference of perfect squares.
perfect square coefficients binomial 
3x3 Determinants
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.
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Regions Between Circles and Squares
Geometry Area
How to calculate the area between a square and an inscribed circle.
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Solving Equations with Squares and Cubes
Geometry Volume
How to solve equations using square roots or cube roots.
square root cube root 
Square Roots
PreAlgebra Decimals and Percents
Understanding squaring and square roots, including decimal approximations

Matrix Operations
Algebra 2 Matrices
How to use simple matrix operations.
adding matrices scalar multiple matrix matrices 
Square Root Operations
Geometry Pythagorean Theorem
How to simplify square roots using two different methods.
Pythagorean theorem simplifying square roots adding square roots multiplying square roots rationalizing roots 
Square Root Operations
Trigonometry Pythagorean Theorem
How to simplify square roots using two different methods.
Pythagorean theorem simplifying square roots adding square roots multiplying square roots rationalizing roots