refreshing your skills - 7. in chapter 7, you will learn about polynomial functions and their...
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![Page 1: Refreshing Your Skills - 7. In Chapter 7, you will learn about polynomial functions and their graphs. In this lesson you’ll review some of the terms](https://reader035.vdocuments.us/reader035/viewer/2022062301/56649f1d5503460f94c34072/html5/thumbnails/1.jpg)
Refreshing Your Skills - 7
![Page 2: Refreshing Your Skills - 7. In Chapter 7, you will learn about polynomial functions and their graphs. In this lesson you’ll review some of the terms](https://reader035.vdocuments.us/reader035/viewer/2022062301/56649f1d5503460f94c34072/html5/thumbnails/2.jpg)
In Chapter 7, you will learn about polynomial functions and their graphs.
In this lesson you’ll review some of the terms and properties of polynomial expressions.
Expressions such as 3.2x, , 4x 3, and 2x0 are monomials.
234
x
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More generally, the expression axn is a monomial when a is a real number and n is a nonnegative integer. A sum of monomials, like, is a polynomial.
You can add, subtract, multiply, and divide monomials and polynomials just as you can combine numbers.
3 234x + x 3.2x+2
4
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Find the sum and difference of
and . 3 22x 6x 3x+ 9 3 24x 2x x 2
3 2 3 2
3 3 2 2
3 2
2x 6x 3x+ 9 4x 2x x 2
2x 4x 6x 2x 3x x 9 2
6 4 4 11x x x
3 2 3 2
3 3 2 2
3 2
2x 6x 3x+ 9 4x 2x x 2
2x 4x 6x 2x 3x+ x 9 2
2 8 2 7x x x
Hori
zonta
lly
![Page 5: Refreshing Your Skills - 7. In Chapter 7, you will learn about polynomial functions and their graphs. In this lesson you’ll review some of the terms](https://reader035.vdocuments.us/reader035/viewer/2022062301/56649f1d5503460f94c34072/html5/thumbnails/5.jpg)
Find the sum and difference of
and . 3 22x 6x 3x+ 9 3 24x 2x x 2
3 2
3 2
3 2
2x 6x 3x+ 9
4x 2x x 2
6 4 4 11x x x
3 2
3 2
3 2
2x 6x 3x+ 9
4x 2x x 2
2 8 2 7x x x
Vert
ically
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To multiply polynomials, it often helps to think of areas of rectangles.
In calculating the area of a rectangle, you multiply length times width.
If the sides of the rectangle are polynomial expressions, the area will also be a polynomial expression.
The area can be written as the product of the length and width, or as the sum of the areas of the interior regions.
![Page 7: Refreshing Your Skills - 7. In Chapter 7, you will learn about polynomial functions and their graphs. In this lesson you’ll review some of the terms](https://reader035.vdocuments.us/reader035/viewer/2022062301/56649f1d5503460f94c34072/html5/thumbnails/7.jpg)
Even though lengths and areas are not negative, you can use rectangle diagrams to represent individual terms and products.Copy each rectangle diagram and fill in the missing values to show the products and quotients of two polynomials.
![Page 8: Refreshing Your Skills - 7. In Chapter 7, you will learn about polynomial functions and their graphs. In this lesson you’ll review some of the terms](https://reader035.vdocuments.us/reader035/viewer/2022062301/56649f1d5503460f94c34072/html5/thumbnails/8.jpg)
Even though lengths and areas are not negative, you can use rectangle diagrams to represent individual terms and products.Write the two factors and the product for each diagram from the last part.