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Lesson 13-4 Pages 683-686. Multiplying a Polynomial by a Monomial. What you will learn!. How to multiply a polynomial by a monomial. Vocabulary. What you really need to know!. The distributive property can be used to multiply a polynomial by a monomial. Example 1: Find the product:.
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Lesson 13-4Pages 683-686 Multiplying a Polynomial by a Monomial
What you will learn! • How to multiply a polynomial by a monomial.
What you really need to know! The distributive property can be used to multiply a polynomial by a monomial.
Example 1: Find the product: -8(3x + 2) -8(3x) + -8(2) -24x + -16 -24x – 16
Example 1b: Find the product: (6x – 1)(-2x) (6x)(-2x) – (1)(-2x) -12x2− -2x -12x2 + 2x
Example 2: Find the product: 4b(-a2 + 5ab + 2b2) 4b(-a2) + 4b(5ab) + 4b(2b2) -4a2b +20ab2 + 8b3
Example 3: The length of a dog run is 4 feet more than three times its width. The perimeter of the dog run is 56 feet. What are the dimensions of the dog run?
w = width 4 + 3w = length Perimeter = 2(L) + 2(w) 56 = 2(w) + 2(4 + 3w) 56 = 2w + 8 + 6w
56 = 2w + 8 + 6w 56 = 8w + 8 48 = 8w 6 = w Width = 6, Length = 22
Page 685 Guided Practice #’s 4-10
Read: Pages 683-684 with someone at home and study examples!
Homework: Pages 685-686 #’s 12-30 even #’s 33-46 all
Prepare for Mid-Test! Pages 698-699 #’s 9-40 Odd Answers in Back of Book!
Page 756 Lesson 13-4