Warm-Up: January 31, 2012

Find the roots of:

0100292 xx

Homework Questions?

SOLVING EQUATIONS USING QUADRATIC TECHNIQUES

Section 7-3

Quadratic Form

A polynomial can sometimes be written in the form

Where u some expression of x This is called quadratic form. Replacing the expression of x with u is

called u substitution.

cbuau 2

Example 1

Write each expression in quadratic form, if possible. Identify what “u” is.

42)

12)

67)

92)

31

32

34

10

36

xxd

xxc

xb

xxa

You-Try #1

Write each expression in quadratic form, if possible. Identify what “u” is.

253)

75)

123)

27)

21

38

8

24

xxd

xxc

xb

xxa

Example 2

Solve each polynomial equation.0216)010029) 324 xbxxa

Warm-Up: February 1, 2012You-Try #2

Solve each polynomial equation.08)03613) 324 xbxxa

Homework Questions?

Example 3

Solve the following equation with rational exponents

641

21

xx

You-Try #3

Solve the following equation with rational exponents

34 31

32

xx

Example 4

Solve the following radical equation

12 xx

You-Try #4

Solve the following radical equation

152 xx

Assignment

Page 363 #11-31 odd

Warm-Up: Groundhog Day!

Today is Groundhog Day! It is time for the annual Groundhog Day photo of

Punxsutawney Phil with some of the members of his Inner Circle. 

Can you help the members find their spots in the photo?  Read the clues below to place the Inner Circle members in their correct spots.  

CLUES:1.  Big Chill is just to the right of Phil.2.  Stump Warden is not next to Thunder Conductor.3.  Rainmaker is not next to Thunder Conductor.4.  Rainmaker is not next to Big Chill.5.  Stump Warden is not next to Big Chill.6.  Thunder Conductor is not next to Phil.7.  Rainmaker is not next to Phil.

Classwork

Worksheet 7-1 Practice (#17-19: only do part c)

Worksheet 7-3 Practice Answer questions on a separate sheet of

paper Both sides of the worksheet should be

done before you leave class.