Quadratic Equations

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

Solve for x.  Round to the nearest hundredth if necessary.
2x² = -x + 3

• x = -1, 1.5

• x = 1.5, -1

• x = 1, 1.5

• x = -1.5, 1

Tags

CCSS.HSA-REI.B.4B

Factor:   3x²- 6x - 24

• (3x - 8)(x + 3)

• (3x + 4)(x - 6)

• 3(x - 2)(x + 4)

• 3(x + 2)(x - 4)

7x² - 26x - 8 = 0

• x = -1 and x = -7/8

• x = 4 and x = -2/7

• x = -4 and x = 2/7

• x = 4 and x = -7/2

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

Solve
(x+3)²-5 = 9

• -3±√14

• 3±√14

• ±11

• ±5

Tags

CCSS.HSA-REI.B.4B

Identify the 'a' value:
 y = 16x² - 8x - 24

• 16

• 8

• -8

• -24

Identify the 'b' value:
 y = 16x² - 8x - 24

• 16

• -8

• 8

• -24

Identify the 'c' value:
 y = 16x² - 8x - 24

• 16

• -8

• 24

• -24

What is the following called? b²- 4ac

• Axis of symmetry

• Quadratic Formula

• Vertex

• Discriminant

Tags

CCSS.HSA-REI.B.4B