solving quadratic equation by finding square roots

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5m² + 1 = 6

• m = 0
• m = 1 or -1
• m = √7
• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B

Solve
16a² - 9 = 0

• a = ^-3/₄, ³/₄ 
• a = ^-4/₃, ⁴/₃ 
• a = ^-9/₁₆, ⁹/₁₆ 
• a = ^-16/₉, ¹⁶/₉ 

Tags

CCSS.HSA-REI.B.4B

Solve for x: 5x² = 45 (Choose all that apply)

• -5

• 3

• 9

• -9

• -3

Tags

CCSS.8.EE.A.2

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 for m.
4m² + 10 = 38

• m = 7, -7
• m = 7
• m = √7
• m = √7, -√7

Tags

CCSS.8.EE.A.2

 $x^2-100=0$  

• x=5, -5

• x=100, -100

• x=25, -25

• x=10, -10

 $64x^2-25=0$  

•  $x=\frac{5}{8},\ -\frac{5}{8}$  

• x=5, -5

• x=8, -8

•  $x=\frac{8}{5},\ -\frac{8}{5}$  

Tags

CCSS.HSA-REI.B.4B

 $x^2-144=0$  

•  $x=\pm12$  

• x = 12

• x = -12

•  $x=\pm12i$  

Tags

CCSS.HSA-REI.B.4B

 $x^2-24=0$  

•  $x=\pm2i\sqrt{6}$  

•  $x=\sqrt{24}$  

•  $x=2\sqrt{6}$  

•  $x=\pm2\sqrt{6}$  

Tags

CCSS.HSA-REI.B.4B