Algebraic Fractions
Overview
An algebraic fraction is just a fraction with algebra in it, and it obeys exactly the same rules you already know for ordinary fractions. Cancel common factors to simplify, find a common denominator to add, and flip to divide. The only new skill is factoring first so you can see what cancels.
In this lesson you will simplify algebraic fractions and combine them by adding, subtracting, multiplying and dividing. Factoring is the key that unlocks every step: once the numerator and denominator are in factored form, the common factors reveal themselves.
Objectives
- Simplify algebraic fractions, and add, subtract, multiply and divide them, using factorization where appropriate.
Audio Lesson
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Mind map
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Flashcards
Quick recall practice on the facts this topic is tested on.
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Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Algebraic Fractions. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Simplify (x^2 - 9)/(x^2 + 4x + 3). A. (x - 3)/(x + 1) B. (x + 3)/(x + 1) C. (x - 3)/(x + 3) D. (x - 9)/(x + 3) Answer: A
- Simplify (2/x) * (x^2/6). A. x/3 B. x^2/3 C. 2/3 D. x/6 Answer: A
- Simplify (x/4) / (x/8). A. 1/2 B. 2 C. x^2/32 D. 32/x^2 Answer: B
- Simplify 1/x + 1/(2x). A. 2/(3x) B. 1/(3x) C. 3/(2x) D. 2/(2x) Answer: C
- In (x + 2)/x, which cancellation is valid? A. Cancel the x to get 2 B. Cancel the x to get 1 + 2 C. No cancellation, since x + 2 is a sum D. Cancel to get (x + 2) Answer: C
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