Unit 5Polynomials

Ms. Pempengco

5.1 Modelling

Polynomials

Modelling Expressions

× We can use algebra tiles to model expressions.

× Models show us how something looks, like fashion models show clothes and space models show planets

Algebra Tiles

× Single tiles represent the number 1.× Empty squares are positive

× Filled in square are negative.

Think: Filled in = looking into a hole

Algebra Tiles

× Rectangular tiles represent a variable× Empty rectangles are positive

× Filled in rectangles are negative.

Filled in = looking into a hole

What am I?

1.

2.

Algebra Tiles

× Box tiles represent a variable squared which can be any letter (like x2, y2, z2, a2, t2)

x2 -x2

What am I?

1.

Model the following with tiles

1. -4t2

2. 2n - 5

Model the following with tiles

3. 2x2 + 7x - 4

4. -4 + 2b2 -7b

5. 7s – 4 + 2s2

Definitions

For the expression 3x -1× x is the variable× 3 is the coefficient of the variable

(‘coefficient’ ⟶ the variable’s partner)× A constant term has no variable

3 x variablecoefficient -1constant

Definitions

× Having both a coefficient and a variable is called a polynomial

3 x

Types of Polynomials

× There are different types of polynomials, depending on the number of terms

(term = different types of tiles)

× The degree of a polynomials tells you the greatest exponent of any term

Types of Polynomials

1. A monomial has only one type of tile:× 2s2

Tiles: Degree: ______

× -2nTiles: Degree: ______

× 4Tiles: Degree: ______

What’s the degree of a constant?

Types of Polynomials

2. A binomial has two types of tiles:× x2 + 3

Tiles: Degree: ______

× 2a – 1Tiles: Degree: ______

× -2b2 + 3bTiles: Degree: ______

Types of Polynomials

3. A trinomial has all three types of tiles:× 2a2 - a + 3Tiles: Degree: ____

× -c2 + 4c -2Tiles: Degree: ____

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Yellow

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YellowIs the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange.

BlueIs the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum.

RedIs the color of blood, and because of this it has historically been associated with sacrifice, danger and courage.

YellowIs the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange.

BlueIs the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum.

RedIs the color of blood, and because of this it has historically been associated with sacrifice, danger and courage.

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