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9.1 Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016 Mental Floss Monday, Feb 1 st Given the numbers: 1247 1= 2= 3= 4= 5= 6= 7= 8= 9= 10 = 11 = 12 = 13 = 14 = 15 = 16 = 9.1 Algebra Review Simplifying Radicals Solving Quadratic Equations Factoring 9.1 Algebra Review Radicals = Square Roots 3 Rules for Simplifying Radicals: 1. No perfect square factors inside the radical 2. No fractions inside the radical 3. No radicals in the denominator Ex: Ex: Ex: 9.1 Algebra Review (Cont.) 1. No perfect square factors inside the radical Product: Operations with Radicals You can only add radicals with the same number inside the square root 9.1 Algebra Review (Cont.) Solving Quadratic Equations

9.1 - Algebra Review (Factoring and Radicals) EXPORT.notebook · 9.1 Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016 9.1 Homework 9.1 p.368 #112 Part 1 due

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Page 1: 9.1 - Algebra Review (Factoring and Radicals) EXPORT.notebook · 9.1 Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016 9.1 Homework 9.1 p.368 #112 Part 1 due

9.1 ­ Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016

Mental Floss ­ Monday, Feb 1st

Given the numbers:  1  2  4  71 =  2 =  3 = 4 =5 = 6 =7 =8 =

9 =10 =11 = 12 =13 = 14 =15 =16 =

9.1 ­ Algebra Review

• Simplifying Radicals

• Solving Quadratic Equations

• Factoring

9.1 ­ Algebra ReviewRadicals = Square Roots3 Rules for Simplifying Radicals:1. No perfect square factors inside the radical

2. No fractions inside the radical

3. No radicals in the denominator

Ex:

Ex:

Ex:

9.1 ­ Algebra Review (Cont.)

1. No perfect square factors inside the radical

• Product:

Operations with Radicals

• You can only add radicals with the same number inside the square root

9.1 ­ Algebra Review (Cont.)

• Solving Quadratic Equations

Page 2: 9.1 - Algebra Review (Factoring and Radicals) EXPORT.notebook · 9.1 Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016 9.1 Homework 9.1 p.368 #112 Part 1 due

9.1 ­ Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016

9.1 ­ Homework 

9.1 p.368 #1­12

Part 1 due Tues 2/2:  #1,2,4­6

Part 2 due Wed 2/3:  #3,7,9,12

Part 3 due Thur 2/4:  #8,10,11

Operations with Radicals

• You can only multiply radicals with other radicals, and numbers in front of radicals by other numbers in front of radicals.

9.1 ­ Algebra Review (Cont.)

2.    No fractions inside the radical

9.1 ­ Algebra Review (Cont.)

3.    No radicals in the denominator

9.1 ­ Homework 

9.1 p.368 #1­12

Part 1 due Tues 2/2:  #1,2,4­6

Part 2 due Wed 2/3:  #3,7,9,12

Part 3 due Thur 2/4:  #8,10,11

Find the perimeter of a rhombus with diagonals of lengths 16 and 20.  Give your answer in reduced radical form.

Mental Floss ­ Wednesday, Feb 3rd

Page 3: 9.1 - Algebra Review (Factoring and Radicals) EXPORT.notebook · 9.1 Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016 9.1 Homework 9.1 p.368 #112 Part 1 due

9.1 ­ Algebra Review (Factoring and Radicals) EXPORT.notebook February 05, 2016

Solving Quadratic Equations

x2 = c

x2 and constant (no x term)

ax2 + bx=0

x2 and x (no constant)

ax2 + bx + c=0

x2, x, and constant(All 3 terms)

Example Example Example

2x2 + 3x ­ 5 = 02x2 + 8x = 0x2 = 25

Square root both sides of the equation, making sure to include +/­.

Divide out a common factor, then set each part equal to 0.

Factor by splitting the polynomial into 2 parenthesis, then set each equal to 0.

x2 = 25

x = ±5

2x2 + 8x = 02x(x+4) = 02x=0     x+4=0x=0     x=­4

2x2+3x­5 = 0(2x+5)(x­1) = 02x+5=0    x­1=0x=­5/2      x=1

1. Factor

2. Factor and solve

3. Factor and solve 

4. Factor and solve

5. Solve

6. Solve 

9.1 ­ Homework 

9.1 p.368 #1­12

Part 1 due Tues 2/2:  #1,2,4­6

Part 2 due Wed 2/3:  #3,7,9,12

Part 3 due Thur 2/4:  #8,10,11