Solve Quadratics by Taking the Square Root

Solve by taking square root:
2x²-4=28

• (4,-4)

• (65/4,-65/4)

• (7/2)

• (7/2,-7/2)

Solve using the Quadratic Formula: 4x²+4x-16=0

• (±√38)/2

• (-1±√5)/2

• (-1±√17)/2

• (11≠√141)/2

Tags

CCSS.HSA-REI.B.4B

Identify the axis of symmetry

• x=-1

• y=-4

• x=1

• y=4

Tags

CCSS.HSF-IF.C.7A

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Solve.

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

Tags

CCSS.HSA-REI.B.4B

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.8.EE.A.2

When do you use the plus or minus symbol?
±

• After taking the square root of both sides

• After adding the square to both sides

• After taking half of b

• After setting the equation equal to zero

Tags

CCSS.HSA-REI.B.4B