Solutions to Quadratics Using Square Roots

Which method of solving quadratics would you use to solve the following:

• Completing the Square

• ZPP

• Square Roots

How many solutions are there?

• 0

• 1

• 2

• 3

• ± 1/4
• ± 9/36
• ± 1/2
• No real solution

Solve the equation
4x² - 25 = 0

• 5/2, -5/2

• 5/2, 5/2

• -5/2, -5/2

• -5/2, 5/2

• 1
• 2
• 3
• 4

• A
• B
• C
• D

• ±81
• ±9
• ±3
• No real solution

x² - 15 = 0

• {15, -15}

• {3.87, -3.87}

• {7.5, -7.5}

• No Solution

Solve.

• A

• B

• C

• D

If the graph of a quadratic does not intercept the x-axis at any point, then it has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution