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Adding and Subtracting Polynomial Fractions. Slideshow 5, Mathematics Room 307 , Mr. Sasaki. Objectives. Recall how to multiply a polynomial by a number Learn how to divide a polynomial by a number A review on adding and subtracting regular fractions
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Adding and Subtracting Polynomial Fractions Slideshow 5, Mathematics Room 307, Mr. Sasaki
Objectives • Recall how to multiply a polynomial by a number • Learn how to divide a polynomial by a number • A review on adding and subtracting regular fractions • How to add and subtract polynomial fractions with a numerical denominator
Multiplying Polynomials by a number Calculate… = As you know, we multiply the number outside the brackets by each term inside. The minus also affects the terms within the brackets.
Dividing Polynomials by a number Calculate… = How can we do this? If we multiply by two, each term is doubled. So if we divide by two, we should half each term.
Dividing Polynomials by a number Example Here, let’s divide each term by 6. Calculate… = Example 2 We can just divide each term by 7. Calculate… = Try the short worksheet!
Adding and Subtracting Fractions Let’s take a step back from algebra… Calculate the following… or 1 = = a. = = b. Try the worksheet!
Polynomial Fractions Adding and subtracting polynomials is very similar. The same basic rules apply. Example Calculate . First we need to make the denominators the same. = And then simplify and combine! = =
Polynomial Fractions One more example! Try the final worksheet! Example Calculate . = Remember to keep your minus! = = =