• #### Adding and Subtracting Polynomials - Problem 4

##### Math›Algebra›Polynomials
Explanation of common errors in adding and subtracting polynomials, particular in terms of working with exponents on variables
• #### Adding and Subtracting Polynomials - Problem 5

##### Math›Algebra›Polynomials
Geometry applications of adding and subtracting polynomials - finding the perimeter
• #### Adding and Subtracting Polynomials - Concept

##### Math›Pre-Algebra›Polynomials
Adding and subtracting polynomials with pictures or aligning vertically
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• #### Adding and Subtracting - Concept

##### Math›Pre-Algebra›Whole Numbers
Using the number line to represent adding and subtracting whole numbers
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• #### Adding and Subtracting - Problem 1

##### Math›Pre-Algebra›Whole Numbers
Practice using the number line as a way to represent adding and subtracting whole numbers
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• #### Adding and Subtracting Polynomials - Problem 2

##### Math›Pre-Algebra›Polynomials
Subtracting polynomials by distributing the negative and combining like terms
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• #### Adding and Subtracting Polynomials - Problem 3

##### Math›Pre-Algebra›Polynomials
Adding or subtracting polynomials with multiple variables
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• #### Adding and Subtracting Rational Expressions - Problem 4

##### Math›Algebra 2›Rational Expressions and Functions
Adding and subtracting rational expressions that already have common denominators with attention to domain restrictions.
• #### Adding and Subtracting Radical Expressions - Problem 9

##### Math›Algebra›Radical Expressions and Equations
Adding and Subtracting radicals involving variables.
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• #### Adding and Subtracting Complex Numbers - Problem 2

##### Math›Algebra 2›Roots and Radicals
Adding and subtracting complex numbers.
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• #### Adding and Subtracting Complex Numbers - Concept

##### Math›Algebra 2›Roots and Radicals
How to add and subtract complex numbers.
• #### Adding and Subtracting Radical Expressions - Problem 6

##### Math›Algebra›Radical Expressions and Equations
Adding and Subtracting radicals involving simplifying first, but no variables.
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• #### Adding and Subtracting Radical Expressions - Problem 5

##### Math›Algebra›Radical Expressions and Equations
Adding and subtracting radical expressions that have variables as well as integers in the radicand.
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• #### Adding/Subtracting Fractions- Unlike Denominators - Problem 2

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Subtracting fractions with unlike denominators
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• #### Adding and Subtracting Radical Expressions - Problem 7

##### Math›Algebra›Radical Expressions and Equations
Geometry applications of adding and subtracting radical expressions, including areas and perimeters of basic shapes.
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• #### Adding and Subtracting Complex Numbers - Problem 1

##### Math›Algebra 2›Roots and Radicals
How to add and subtract complex numbers.
• #### Adding/Subtracting Fractions- Unlike Denominators - Concept

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Drawing pictures and procedures for adding or subtracting fractions with unlike denominators
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• #### Adding/Subtracting Fractions- Like Denominators - Problem 1

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Adding and subtracting fractions with the same denominator
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• #### Adding/Subtracting Fractions- Like Denominators - Concept

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Adding and subtracting fractions that have the same denominator, including a visual representation
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• #### Adding/Subtracting Fractions- Like Denominators - Problem 2

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Adding and subtracting fractions with common denominators and then reducing
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