Solving Quadratic Equations by Square Rooting

Method used to find the value of x by putting a square root to each side to extract the square is called _______?

• Extracting the square root

• Completing the square

• Factoring

• Quadratic formula

Tags

CCSS.HSA-REI.B.4B

Solve using Square Root Property.

5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

Solve using the SQUARE ROOT PROPERTY:

Tags

CCSS.HSA-REI.B.4B

• x = 5.57

• x = -8 or x = -8

• x = 4.12  or x = -4.12

• no solution

Tags

CCSS.HSA-REI.B.4B

• x = 0

• no solutions

• x = 4 or x = -4

• x = 4

Tags

CCSS.HSA-REI.B.4B

x² = 49

• {7, -7}

• {24.5}

• {8, -8}

• {7}

Tags

CCSS.8.EE.A.2

Solve by the Square Root Method:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

Solve x²− 4 = 0 (solve using square roots)

• 2 and -2

• 4 and -4

• 16 and -16

• 8 and -8

Tags

CCSS.HSA-REI.B.4B

Which method is MOST EFFICIENT to solve:
8x²  -  6  = 0

• Square Root Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

Decide on the best method:
x² = 25

• Square Root Method

• Factor Method 

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B