Square Root method to solve Quadratics Equations

Solve the equation using square root method.

 $x^2-8\ =\ 1$  

• x = 3  or   x = -3

• no solutions

• x = 6 or x = -6

• x = 3

Tags

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.

 $\ n^2-10=-10$  

• x = 0

• no solutions

• x = 4 or x = -4

• x = 4

Solve the equation using square root method.

 $\ 8n^2-10=-11$  

• x = 3 or x = -3

• no solutions

• x = 5 or x = -5

• x = 16 or x = -16

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

Solve the equation using square root method.

 $\ 16x^2+3=12$  

•  $x\ =\ \frac{9}{16}\ or\ x\ =-\frac{9}{16}$  

• no solutions

•  $x=3\ \ or\ x=-3$  

•  $x=\frac{3}{4}\ \ \ or\ \ \ x\ =-\frac{3}{4}$  

Which of the following is a solution for the equation  $61\ -\ 3n^2=\ -14$  ?

• 625

• 25

• 10

• 5

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 the equation by square root method. Round your answer to the nearest hundredth.

  $x^2-3=\ 24$  

• x = 5.20

• x = 4.24

• x = 4.24  or x = -4.24

• x = 5.20  or   x = -5.20

Solve the equation by square root method. Round your answer to the nearest hundredth.

  $x^2-7=\ -15$  

• x = 5.57

• x = -8 or x = -8

• x = 4.12  or x = -4.12

• no solution

Tags

CCSS.HSA.REI.B.4