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Warm Up 1) Create the following: 2) Create a Monomial, Binomial, and Trinomial 3) Find the Degree of the following a) 5x - 10 b) 6x 2 + 3x - 1 4) Find the Degree and put in Standard Form: 5x 5 + 3x - 7 + 4x 2 + 3x 4 – 1 5) Find the sum/difference: a) (9x 4 + 8y + 12) – (3y 2 – 7y + 2) b) ( 6x 3 + 5x +11) + ( 3x 3 +7x +8) Constant Linear Equation Quadratic Equation Cubic Equation
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Review How would you multiply 3(5x – 1) ? Can we classify these polynomials?
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Multiplying a MONOMIAL and a POLYNOMIAL Two things to remember: 1. Use the DISTRIBUTIVE PROPERTY! 2. When multiplying variables, ADD the exponents. Example:
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Examples:
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You try:
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Examples:
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You try:
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Examples: What is different here?
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You try:
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Examples: You want to find the area of the classroom. Your teacher tells you that the length is 5 feet less than twice the width. Write a single polynomial to express the area of the room.
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You try: A rectangular garden is 2x + 3 units long and 3x units wide. A) Draw a model of the garden. B) Find the area of the garden.
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Hands up, pair up Walk around the room, high-fiving your classmates. When I say “pair up,” the person that you are high-fiving becomes your partner. Sit down together and wait quietly for the next instructions.
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Partner Ticket Out Simplify the following: 1. 2.
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Homework 1.5 Study Guide Worksheet
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January 31 st, 2013
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Warm Up 1. Multiply: 2. Multiply: 3. Simplify: 1. Find the area of the rectangle:
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Summarize What types of polynomials have we already multiplied? What property did we use to multiply them?
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Can we classify these 2 polynomials? (2x + 3)(5x + 8)
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Multiplying a BINOMIAL and a BINOMIAL Guess what: we STILL use the DISTRIBUTIVE PROPERTY. But we also have some special tricks to make distributing easier: FOIL Box Method
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FOIL FOIL is an acronym that can help you multiply two binomials. F – First O – Outside I – Inside L – Last
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Let’s see how it works… (y + 3)(y + 7)
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Examples: (2x + 3)(5x + 8)
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Examples: (2x – 1)(-4x + 4)
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You try: (8x + 1)(x – 3)
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You try: (5x – 3)(10x – 2)
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Why is FOIL the same as the Distributive Property?
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Box Method The box method is more visual and can help you make sure that you have not missed multiplying any terms.
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Box Method Draw a box and write one binomial on the top and the other on the bottom. Multiply each pair of terms. Your answer is on the inside of the box. Combine like terms to write your final answer. Example: (3x – 5)(5x + 2)
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Example: (7p – 2)(3p – 4)
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Example: (2a – 3b)(2a + 4b)
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You try: (6p – 4)(p + 10)
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You try: (p – 3)(4p – 7)
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Why is the Box Method the same as the Distributive Property?
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A Binomial SQUARED What does it mean to SQUARE a number? How could we simplify the expression (4x + 1) 2 ?
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You try: Use either method to simplify the following: (2x – 3) 2
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Writing assignment Tell whether you prefer to multiply binomials using the FOIL method or the Box method. Explain why you prefer that method in 2-3 sentences.
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Practice Time Cut the DARK squares apart. Multiply each pair of binomials and match your answer to another square. When you think you have matched all of the squares, let me know and I will come check your work. If it is correct, I will bring you paper and glue to glue down your puzzle.
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Homework Quotable puzzle – you must show your work!
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February 1 st, 2013
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Warm Up 1. Find the area of the rectangle below: 2. Find the area of a SQUARE with side length (x + 3)
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Summarize What type of polynomials have we multiplied so far?
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Can we classify the polynomials below? (3x + 7)(2x 2 – x + 5)
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How can we multiply them? (3x + 7)(2x 2 – x + 5)
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Example: (r – 2)(3r 2 + 4r – 1)
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Example: (4ab – 2a + 3)(a + b)
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You try: (5x + 2)(3x 2 – 8x + 10)
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You try: Find the area of the rectangle below:
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Write your own Create 3 problems for your partner to simplify: 1. MONOMIAL times a BINOMIAL 2. BINOMIAL times a BINOMIAL 3. BINOMIAL times a TRINOMIAL
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Instructions Now on a separate sheet, you should simplify each expression. Once you both are finished simplifying your own expression, exchange the problems (without the work) with your partner. Simplify your partners expressions then exchange back and check each others’ work.
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Put it all together Simplify: 3a(a 2 – 4) + 5a 2 (2a + 10)
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You try! Simplify: -4b(2b + 1) – 8(b 2 + 2b – 2) Simplify: x 2 (x + 1) + 5x(x – 3) – 4(x + 10)
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Multiplication practice
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Around the World I will assign your group and tell you where to begin. Lift up the flap and simplify the expression underneath. Look for your answer somewhere else around the room and go there to complete the next problem. The problems form a circuit. If you have done everything correctly, you should end up where you begin. Be sure to show your work for every problem. This is how you will earn your QUIZ grade.
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Ticket Out On a separate sheet of paper, simplify each of the following: 1. (8x – 2) 2 2. (5x + 6)(x 2 – 2x + 5) 3. Write 3-5 sentences explaining to your friend how to multiply polynomials.
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Homework Workbook p. 232 (#35-41)
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