Quadratic Equations and Inequalities Test Review- Erickson

What is the vertex of y=x²+4x+3?

• (2,1)

• (0,0)

• (-2,1)

• (-2,-1)

Find the number of solutions of the equation

9h² - 12h + 4 = 0 by using the discriminant.

• one real solution

• two real solutions

• three real solutions

• no real solutions

Solve the following quadratic equation...

x² - 2x - 15 = 0

• x = -5

  x = 3

• x = 5

  x = -3

• x = 15

  x = -1

• x = -15

  x = 1

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• -4.9 and -0.1

• -8.54 and 8.54

• -6.77 and 1.77

• -0.45 and 3.55

x² - 9x - 112 ≥ 0

• -7 < x < 16

• -7 ≤ x ≤ 16

• x < -7 or x > 16

• x ≤ -7 or x ≥ 16

Which correctly shows the inequality y < X² - 6x +13?

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Which correctly shows the inequality y > - (x+2)² - 4?

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Simplify the following radical: √-32

• 4i√2

• 16√2

• 4√8

• 3√2