Rewriting Complex Fractions in Intermediate Algebra

The video tutorial explains how to handle complex rational expressions, which involve fractions within fractions. It introduces two main methods: using a common denominator and clearing denominators by multiplying the top and bottom by the same value. The tutorial provides examples to illustrate these methods and emphasizes careful arithmetic to avoid common mistakes. The goal is to simplify complex expressions into more manageable forms.

What is the primary goal when dealing with complex rational expressions?

• To make the expressions more complex

• To simplify the expressions

• To add more variables

• To change the variables

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CCSS.HSA.APR.D.6

In the first method, what is the initial step to simplify a complex rational expression?

• Invert and multiply directly

• Get a common denominator

• Add the fractions

• Subtract the fractions

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CCSS.HSA.APR.D.6

After getting a common denominator in the first method, what is the next step?

• Divide the fractions

• Add the fractions

• Invert and multiply

• Subtract the fractions

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CCSS.7.NS.A.1C

In the second method, what is the purpose of multiplying the top and bottom by the same factor?

• To change the value of the expression

• To clear the denominators

• To add more variables

• To make the expression more complex

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CCSS.HSA.APR.D.6

What factor is used to clear the denominators in the second method?

• A prime number

• The greatest common divisor

• The least common multiple

• Any random number

In Example 1, what is the final simplified form of the expression 2 - 2/T divided by 2 + 2/T?

• 2T + 2 / 2T - 2

• 2T - 2 / 2T + 2

• T - 1 / T + 1

• T + 1 / T - 1

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CCSS.HSA.APR.D.6

In Example 1, what common factor is used to simplify the expression?

• T - 1

• T

• 2

• T + 1

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CCSS.7.EE.A.1

In Example 2, what is the least common multiple used to clear the denominators?

• X + 1

• X - 1

• X squared

• X

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CCSS.HSA.REI.A.2

What is the final simplified form of the expression 1 + 1/X divided by 1 - 1/X squared?

• X / X - 1

• X - 1 / X

• X + 1 / X - 1

• X - 1 / X + 1

Tags

CCSS.HSA.APR.D.6

In the challenge problem, what is the correct final simplified form of the expression 1/X + 1 - 1/X all divided by 1/X?

• X - 1 / X + 1

• X / X - 1

• X / X + 1

• 1 / X + 1

Tags

CCSS.HSA.APR.D.6