Solve Quadratic Equations-1

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

• x = -1

• x = -1 or x = 1

• x = 1

• x = -2 or x = 5

Tags

CCSS.HSA-REI.B.4B

What  are the solutions of this graph?

• -2 and 3
• -1/2 and -6
• -2 and -6
• 3 and -6

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts
• vertex
• x-intercepts
• maximum

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

4x² - 1 = 48

• x = 7/2 or -7/2

• x = 2/7 or -2/7

• x = 49/4 or -49/4

• x = 47/4 or -47/4

Tags

CCSS.HSA-REI.B.4B

Solve by factoring.
x² + 2x - 8 = 0

• 4 and 2
• 4 and -2
• -4 and 2
• -4 and -2

Tags

CCSS.HSA-REI.B.4B

Solve using square roots:

x² + 7 = 89

• x = 9.8

• No real solution

• x = 9.1

• x = 9.1 or x = -9.1

Tags

CCSS.8.EE.A.2

How many solutions (roots) does this graph have?

• one
• two
• no solutions
• cannot be determined