LT 4 Solving by Square roots

Which of the following is the solution/s of the equation

 $x^2-81=0$  ?

•  $\pm81$  

•  $\pm9$  
  

•  $\pm7$  
  

•  $\pm6$  
  

Find the roots/solutions of the equation  $y^2+49=0$  .

•  $\pm5$  

•  $\pm6$  
  

•  $\pm7$  
  

•  $no\ real\ solution$  
  

What are the roots of the equation  $2x^2-32=0$  ?

•  $x=\pm4$  

•  $x=\pm16$  

•  $x=\pm32$  

•  $no\ real\ solution$  
  

What are the roots of the equation  $16x^2=25$  ?

•  $x=\pm\frac{25}{16}$  
  

•  $x=\pm\frac{4}{5}$  
  

•  $x=\pm\frac{5}{4}$  
  

•  $no\ real\ solution$  
  

Solve for x

x² = 64

• x = 8, -8

• x = 32, -32

• x = 4, -4

• No real solution

Solve for x

3x² - 27 = 0

• x = 4.9, -4.9

• x = 9, -9

• x = 3, -3

• No solution

Solve using square roots.
k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve using square roots.
4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

Solve using square roots.

• ±√9

• ±3

• ±1

• No real solution