Quadratic Equations and the Discriminant

How many solutions are there if the discriminant is positive.

• 0
• 1
• 2
• Infinite

Tags

CCSS.HSA-REI.B.4B

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to find the solutions for
y = -x² - 5x + 12

• -4.9 and -0.1
• -8.54 and 8.54
• -0.45 and 3.55
• -6.77 and 1.77

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3
• 2, 3
• 2, -3
• -2, -3

Tags

CCSS.HSA-REI.B.4B

The quadratic equation can be used to solve quadratic equations that cannot be factored.

• True
• False

Tags

CCSS.HSA-REI.B.4B

Find the zeros (roots) of the quadratic function.

y = 5x² + 16x + 3

• (-3,0) & (-⅕,0)
• (5,16)
• (5,0) & (3,0)
• x = -3, -⅕

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve    
2x² + 7x - 15 = 0

• -1.5 or 5
• No Solution
• -5 or 1.5
• 0.7 or 5

Tags

CCSS.HSA-REI.B.4B

How many solutions will the function have?
x² - 6x + 9 = 0

• Two Solutions
• One Solution
• No Real Solutions
• One Million Solutions!!!

Tags

CCSS.HSA.REI.B.4

How many solutions will the function have?
3x² - 5x + 2 = 0

• Two Solutions
• One Solution
• No Real Solutions
• One Million Solutions!!!

Tags

CCSS.HSA-REI.B.4B

How many solutions will the function have?
9x² - 5x + 1 = 0

• Two Solutions
• One Solution
• No Real Solutions
• One Million Solutions!!!

Tags

CCSS.HSA-REI.B.4B