Solve Quadratics (square root method)

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

7x² + 1 = 8

• ± 1
• ± 7
• ± √7
• ± 8

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Solve the equation using square root method.

 $-9x^2=81$  

• x = 3  or   x = -3

• no solutions

• x = 6 or x = -6

• x = 3

Tags

CCSS.HSA.REI.B.4

Solve the equation using square root method.

 $\ 3x^2-9=3$  

• x = 9 or x = -9

• no solutions

• x = 2 or x = -2

• x = 81 or x = -81

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Which of the following is a solution for the equation  $36n^2-13=12$  ?

•  $\frac{5}{6}$  

•  $\frac{6}{5}$  

•  $\frac{1}{6}$  

•  $5$  

Tags

CCSS.HSA.REI.B.4

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.A.2

CCSS.HSA.REI.B.4

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solutionb

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve for x     x² - 4 = 76

• x = 4 , -4
• x = 4√5    ,  -4√5
• x = 80   ,  x = -80
• x = 5√4    or    -5√4

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

2x²= 30

• x= √5
• x= √30
• x= √15
• x= ±5

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4