Solving Quadratics Review

What is the green dot on the parabola called?

• vertex and maximum

• vertex and minimum

• axis of symmetry

• y-intercept

What are the zeros of (2x+5)(x-6)=?

Use the Zero Product Property.

• -6, 5/2

• -5/2, 6

• 6, 2

• 5, -6

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Solve by taking Square Roots.

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Solve using the Square Root Method.

(x + 1) ² = 25

• ± 5

• 4  or  -6

• -4  or  6

• ± 4

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

• No real solutions

What should be added to both sides of the following equation to complete the square?
x² + 12x = 5

• 12
• 6
• 36
• 5