G10-Solving Quadratic Equations

Solve by taking the square root:

x² = 16

• ± 4

• ± 8

• 4

• 8

Solve by taking the square root:

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

Solve by taking the square root:

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

What are the solutions?

• 0 and 8
• -2 and -4
• 3 and -1
• 2 and 4

How many solutions does this graph have?

• one
• two
• no real solutions
• cannot be determined

How many solutions does this graph have?

• one
• two
• no solutions
• cannot be determined

Solve the equation by factoring:

x²-6x+8=0

• x = 2 or x = 4

• x = -2 or x = -4

• x = -2 or x = 4

• x = 2 or x = -4

Which answer choice correctly shows the quadratic equation above in factored form?

• (x + 7)(x - 2) = 0

• (x - 7)(x + 2) = 0

• (x - 7)(x - 2) = 0

• (x + 7)(x + 2) = 0

Solve the following quadratic...

x² - 16 = 0

• x = -2, 8

• x = 2, -8

• x = 4, -4

• x = -1, -16