Finding a Square Root to Solve Problems

Solve by taking square roots:
a² + 9 = 9

• no solution

• a = 0

• a = 3 or -3

• a = 18

Tags

CCSS.HSA-REI.B.4B

Solve the equation by the square root property.

x² = -225

Tags

CCSS.HSA-REI.B.4B

In solving quadratic equation, if the linear term is missing what is the best method to use?

• extracting square root

• factoring

• completing the square

• quadratic fromula

Tags

CCSS.HSA-REI.B.4B

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)

Tags

CCSS.HSA-REI.B.4B

• No real solutions

Tags

CCSS.HSA-REI.B.4B

Solve using the Square Root Method -5x² = -50

• ± 5

• ± 10

• ± √10

• -10

• 5

Tags

CCSS.HSA-REI.B.4B

• Factoring

• Isolating the variable and taking a square root

Tags

CCSS.HSA-REI.B.4B

Review of solving by square rooting! What are the solutions to the quadratic equation, x² = 49?

• x = 7

• x = -7

• x = 7 or x = -7

• There is no solution

Tags

CCSS.HSA-REI.B.4B

Solve the following equation by using the square root property

• x = 18

• x = 0 or x = 6

• x = 6

• x = 6 or x = -6

Tags

CCSS.HSA-REI.B.4B

Solve by square rooting:

8(x² - 3) + 7 = -17

• x = 1 or x = -1

• x = 0

• No solutions

• x = 3 or x = -3

Tags

CCSS.HSA-REI.B.4B