Intro to Quadratic Equations

 $-2\left(-5x^2+5\right)-2x^2+4=34$  
Find ALL solutions

•  $x=\sqrt{31}$  

•  $x=-\sqrt{31}$  
  

•  $x=\sqrt{5}$  
  

•  $x=-\sqrt{5}$  
  

Tags

CCSS.8.EE.A.2

 $3\left(2x^2+3\right)+4x^2+2=21$  
Solve for ALL solutions of x.

• x=1

• x=-1

•  $x=\sqrt{10}$  
  

•  $x=-\sqrt{10}$  
  

Tags

CCSS.8.EE.A.2

 $-5\left(x^2-1\right)-x^2+1=-18$  
Solve for ALL values of x.

• x=4

• x=2

• x=-2

• x=-4

Tags

CCSS.HSA-REI.B.4B

 $8x^2-5=6x^2+1$  
Solve for ALL values of x.

• x=3

• x=-3

•  $x=\sqrt{3}$  

•  $x=-\sqrt{3}$  

Tags

CCSS.HSA-REI.B.4B

 $-2x^2-9=x^2-21$  
Find ALL solutions x.

• x=4

• x=-4

• x=2

• x=-2

Tags

CCSS.HSA-REI.B.4B

 $x^2-6=5x^2-6$  
Find ALL solutions x to the equation.

• x = -1

• x = 1

• x = 4

• x = 0

Tags

CCSS.HSA-REI.B.4B

 $-7x^2+28=7$  
Solve for ALL solutions.

•  $x=\sqrt{7}$  
  

•  $x=\sqrt{3}$  

•  $x=-\sqrt{3}$  

•  $x=-\sqrt{7}$  
  

Tags

CCSS.8.EE.A.2

 $-11=-22+\frac{x^2}{5}$  
Solve this equation for x for ALL solutions.

•  $x=\sqrt{11}$  

•  $x=-\sqrt{55}$  

•  $x=-\sqrt{11}$  

•  $x=\sqrt{55}$  

Tags

CCSS.8.EE.A.2

 $x^2=49$  
Select ALL solutions to this equation.

• x = 7

• x = -7

• x = 49

• x = -49

Tags

CCSS.8.EE.A.2

 $x^2-36=0$ 
Select ALL solutions to this equation.

• x = 6

• x = -36

• x = -6

• x = 36

Tags

CCSS.8.EE.A.2