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Adding ratioinal expressions with quadratic denominators requires factoring each denominator so that the LCD can be determined. Then each fraction is exapanded by multiplying the tops and the…
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This demonstrates adding two rational expressions that have different terms individually in the numerator and a common denominator. When the fractions are added, it creates the possibility of adding…
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A quick presentation of why we only add the numerators of fractions with common denominators, and then a quick example of adding two fractions with the same denominator.
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A quick justification of dividing fractions by multiplying by the reciprocal of the second fraction in the division followed by an example that involves reducing the common factors in the numerator…
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Two examples of expressions with negative exponents that are changed to expressions with positive exponents, leaving the numerical factor as is.
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A demo that approaches the given expression and its simplification by writing out the meaning of the exponents as muliplication, then reducing like factors to arrive at a simpler result
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Two examples of how to apply a fractional exponent to a whole number base.
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Two examples of how to deal with fractional exponents on negative numbers.
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Describes how to deal with denominators that are simply opposite in sign when adding or subtracting fractional expressions.
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Demonstrates how to adjuxt fractional algebra so that the fractions can be added together
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Division by zero is not possible, so this shiows how to determine what variable value(s) are not alloowed to be inserted into a particular fraction in algebra.
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This is a second look at the multiplication of a fraction and a whole number, again reducing ahead of time before multiplying the fraction's tops and bottoms.
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