HomeworkHomeworkSection 9.1: 1) pg 430 6-16, 19-27, 39-52

2) WB pg 47 all

Section 9.2: 1) pg 436 22-50 all2) WB pg 48 all 3) Worksheet

Section 9.3: 1) pg 441 4, 5-36, 45-522) WB pg 49 all

Section 9.4: 1) pg 446 6-37, 40-512) WB pg 50 all

Chapter 9Chapter 9

Write in standard form:9 + x – 4x2

-9 - 3m2 - m3 + 2m

Standard Form: The terms are ordered from left to right in descending order (greatest exponent to the least)

Section 9.1

Chapter 9Chapter 9

Adding PolynomialsPut in standard form and combine like terms

Section 9.1

Find the sum:

(2x2 – 3x + 5) + ( 4x2 + 7x – 2)

(3x2 + 5x + 5) + (4 – 6x – 2x2)

Chapter 9Chapter 9

Write a polynomial expression for the perimeter the polygon:

x2 + x

2x2 2x2

x2 + x

Section 9.1

Chapter 9Chapter 9

Subtracting PolynomialsPut in standard form and combine like terms

Section 9.1

Find the difference:

(4x2 + 3x + 2) - ( 2x2 - 3x + 7)

(3x2 - 2x + 3) - (2x – 4 + x2)

Chapter 9Chapter 9

Multiplying PolynomialsUse the distributive property to find the product

Section 9.2

Example:Using the distributive property to find a product

3x(2x – 5)

(x + 3)(x +2)

Chapter 9Chapter 9 Section 9.2

Examples:

5x(2x + 1) 6x(2x – 3)

(x + 4)(x - 5) (x + 3)(x – 10)

Chapter 9Chapter 9

Multiplying BinomialsUse the FOIL Method

Multiply the First terms. Multiply the Outside terms. Multiply the Inside terms. Add the outside and inside

products. Multiply the Last Terms.

Section 9.3

Example:

(3x + 2)(5x + 1)

Chapter 9Chapter 9 Section 9.3

Examples:

(x + 9)(2x - 4) (2s + 1)(5s + 3)

(4g - 7)(2g + 3) (3m - 5)(3m + 5)

Chapter 9Chapter 9

Special ProductsFor any real numbers a and b and for any expressions

involving real numbers and variables. (a + b)(a – b) = a2 – b2

(a + b)(a + b) = (a + b)2 = a2 + 2ab + b2

(a - b)(a – b) = (a – b)2 = a2 – 2ab + b2

Section 9.3

Example:

(x – 3)(x + 3)

Chapter 9Chapter 9 Section 9.3

Examples:

(x – 6)(x+6) (2x – 3)(2x – 3)

(2x + 6)2 (2x + 6)(2x + 6)