1/29 Alg2 Week Review

Friday 1/29/21

It's Friyay!!!! :)

Afternoon Message

Good afternoon and HAPPY FRIDAY :) This is our last Friday of January -- let's make it a good one!

Announcements:

I have office hours today.

Chapter 4 test next week.

Makeup Quizizz assignment is coming.

Agenda

• Do Now/Afternoon Message

• Fun Friday festivities

• Learning Target

• Review game

• Exit Ticket

Poll

Would you rather stay in during a snow day or build a fort?

• Stay in

• Build a fort

Poll

Would you rather have the ability to see 10 minutes into the future or 150 years into the future?

• 10 minutes

• 150 years

Poll

Would you rather have telekinesis (the ability to move things with your mind) or telepathy (the ability to read minds)?

• Telekinesis

• Telepathy

Poll

Would you rather have everyone you know be able to read your thoughts or for everyone you know to have access to your Internet history

• Read your thoughts

• Access your internet history

Poll

Would you rather have universal respect or unlimited power?

• Universal respect

• Universal power

Poll

Would you rather solve world hunger or global warming?

• World hunger

• Global warming

How many Pixar movies have you seen?

How many times have you considered ALL of the wonderful math that makes the magic happen? :)

https://www.youtube.com/watch?v=_IZMVMf4NQ0&feature=youtu.be

Poll

Learning Target: I can apply my knowledge of completing the square and using the quadratic formula to solve problems.

Rate your current state of understanding of the learning target.

• 4 - I could teach it!

• 3 - I understand it.

• 2 - I'm getting there.

• 1 - I don't understand, I need some more help/practice.

It's review time!

Work hard now so you feel good about your test next week :)

Multiple Choice

Identify the value of 'b' in the following equation:
 $x^2+4x+1=0$  

Recall standard form in general:  $ax^2+bx+c$  

• 1

• -1

• 4

• 2

Multiple Choice

Find the missing value that will complete the square:

 $x^2+4x+1=0$  

Recall: The value you're looking for is  $\left(\frac{b}{2}\right)^2$  

• 1

• 2

• 4

• 16

Multiple Choice

Now that you've completed the square successfully, factor the quadratic equation.

 $x^2+4x\ +4=3$  

•  $\left(x+4\right)\left(x+3\right)$  
  

•  $\left(x+3\right)^2$  

•  $\left(x+4\right)^2$  

•  $\left(x+2\right)^2$  

Multiple Choice

Identify the values of  $a,b,c$  in the following quadratic expression: 

 $x^2+2x+3$  

•  $a=0,\ b=1,\ c=3$  

•  $a=2,\ b=3,\ c=5$  

•  $a=1,\ b=2,\ c=3$  

•  $a=0,\ b=1,\ c=2$  

Multiple Choice

To solve the equation $x^2+2x+3$  , we will need to substitute in the values of a, b, c into the quadratic formula. What should your first step in order of operations be? 

 $x=-2\pm\frac{\sqrt{2^2-4\left(1\right)\left(3\right)}}{2\left(1\right)}$  

• Multiply  $2\left(1\right)$  

• Evaluate  $2^2$  

• Evaluate the entire square root

• Add -2 to the square root quantity

Multiple Choice

Solve the quadratic equation using the quadratic formula. $x^2+2x+3=0$  

 $x=-2\pm\frac{\sqrt{4-12}}{2}$  

•  $-2\pm2i$  
  

•  $-1\pm\sqrt{2}i$  
  

•  $-2\pm i$  

•  $-2\pm2$  

Move to Google Classroom and complete your exit ticket.

Enjoy your weekend, I will see you in February :)