Solving Problems Using Square Root

• a

• b

• c

• d

Solve using the square root method: (x+2)² - 6= 30

• (6,0) (-6,0)

• (34,0) (-34,0)

• (9.47,0) (-1.47)

• (4,0) (-8,0)

• Factoring

• Isolating the variable and taking a square root

What are the roots of the quadratic equation 2x^2 - 18 = 0 using the square root method?

• x = ±3

• x = ±6

• x = ±9

• x = ±12

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

(x - 7)² = 5

• x = 7-√5

• x = 7+√5

• x = √5

• x = 7±√5

(x + 3)² = 36

• x = √36

• x = √39

• x = -9 and x = 3

• x = 9 and x = -3

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64