M1-C28 A Focus on Square Roots

1What are the roots / solutions of the quadratic equation (x+ 1)² = 50?

•  $x\ =\ -1\pm2\sqrt{25}$ 

•  $x\ =\ 1\pm2\sqrt{25}$ 

•  $x\ =1\pm\ 5\sqrt{2}$ 

•  $x\ =\ -1\pm5\sqrt{2}$ 

• -4

• 4

• 8

• 16

Find ALL zeros

• A
• B
• C
• D

Solve using square roots.

• A
• B
• C
• D

Which of the following roots match the above polynomial:

• -3,-1,4
• -3,2i,-2i

Solve for x:  $2\left(x+1\right)^2-50=0$  

•  $x_1=6,\ x_2=4$  
  

•  $x_1=-6,\ x_2=4$  
  

•  $x_1=-6,\ x_2=-4$  
  

•  $x_1=6,\ x_2=-4$  
  

Use the Fundamental Theorem of Algebra to state the number of zeros/solutions/roots of the polynomial. 

• A
• B
• C
• D

• 28

• 14

• 196

• 56

• This equation has 2 roots.
• This equation has 4 roots.
• This equation has 5 roots.
• This equation has no roots.

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