Solving by Square Root Method and Completing the Square

Solve the equation by completing the square and then finding the roots. 
x²+ 6x - 4 = 36

• x = -7, 7

• x = 4, -10

• x = -4 +- √7

• x = 10, -4

Tags

CCSS.HSA-REI.B.4B

Choose the best method to solve this quadratic:

​ (a)  

3x² - 21 = 3

• Square Roots

• ZPP

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

Choose the best method to solve this quadratic:

​ (a)  

2(x + 2)² - 5 = 8

• Square Roots

• Quadratic Formula

• ZPP

Tags

CCSS.HSA-REI.B.4B

• Completing the Square

• ZPP

• Square Roots

Tags

CCSS.HSA-REI.B.4B

Which method of solving quadratics would you use to solve the following:

• Completing the Square

• ZPP

• Square Roots

Tags

CCSS.HSA-REI.B.4B

How many solutions are there?

• 0

• 1

• 2

• Cannot be determined

Which method of solving quadratics would you use to solve the following:

• Completing the Square

• ZPP

• Square Roots

Tags

CCSS.HSA-REI.B.4B

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2

Tags

CCSS.HSA-REI.B.4B

Which method do you feel is the best way to solve the following?

• Factor

• Isolation/Solve with Square Roots

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

What are the steps to solving this by completing the square?

• Subtract 21 from both sides of the equation

• Rewrite the left hand side as a (binomial)²

• Take the square root of both sides of the equation

• Add 25 to both sides of the equation

• Subtract 5 from both sides of the equation

Tags

CCSS.HSA-REI.B.4B