Solving Quadratic Equations

Solve by finding square roots and simplify completely:
 $2x^2=20$ 

•  $x=\pm10$  

•  $x=\sqrt{10}$  

•  $x=\pm\sqrt{10}$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by finding square roots and simplify completely:
 $x^2-16=0$ 

•  $x=\pm16$  

•  $x=4$  

•  $x=\pm4$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by finding square roots and simplify completely:
 $x^2+20=0$ 

•  $x=-20$  

•  $x=\pm2\sqrt{5}$  

•  $x=-2\sqrt{5}$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
 $x^2-36=0$ 

•  $x=\pm6$  

•  $x=\pm36$  

•  $x=\pm18$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
 $x^2+10x+24=0$ 

•  $x=6\ or\ x=4$  

•  $x=\pm\sqrt{14}$  

•  $x=-6\ or\ x=-4$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
 $x^2+2x-15=0$ 

•  $x=3\ or\ x=-5$  

•  $x=\pm\sqrt{13}$  

•  $x=-3\ or\ x=5$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
 $x^2-10x+16=0$ 

•  $x=-2\ or\ x=-8$  

•  $x=\pm\sqrt{6}$  

•  $x=2\ or\ x=8$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:
 $x^2+10x+9=0$ 

•  $x=1\ or\ x=9$  

•  $x=-1\ or\ x=-9$  

•  $x=-2\ or\ x=-18$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:
 $2x^2+6x-8=0$ 

•  $x=2\ or\ x=-8$  

•  $x=-1\ or\ x=4$  

•  $x=1\ or\ x=-4$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:
 $x^2-7x+10=0$ 

•  $x=2\ or\ x=5$  

•  $x=-2\ or\ x=-5$  

•  $x=4\ or\ x=10$  

• No real solutions

Tags

CCSS.HSA-REI.B.4B