Discriminants & Quadratic Formula

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

Tags

CCSS.HSA-REI.B.4B

Solve the equation using the quadratic formula.
7x² + 5x - 2 = 0

• -2/7, -1
• no real solutions
• -16/7, 6/7
• -1, 2/7

Use the quadratic formula to solve the following equation. 
2a² - 46a + 252 = 0

• 18, 28
• -9, -14
• 9, 14
• -18, 28

Use the quadratic formula to solve the following equation.
x² + 6x + 18 = 0

• 0, -6
• -3±3√3
• no solution
• -3±3

Use the quadratic formula to solve the quadratic equation.
m² + 7m - 4 = 2

• (7±5)/4
• (-7±5)/2
• (7±√73)/2
• (-7±√73)/2

Find the discriminant of the function 
x² - 5x = 0

• 25
• 21
• 1
• 29

Tags

CCSS.HSA-REI.B.4B