Finding Roots of Quadratics

Factor x² + x - 2

• (x + 1)(x - 2)
• (x - 1)(x + 2)

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Find the roots/zeros of x² + x - 2

• -1, 2
• -2, 1

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve
x² + 2x - 24 = 0

• x = -6, x = 4
• x = 6, x = -4
• x = 12, x = -2
• x = 8, x = -3

Tags

CCSS.HSA-REI.B.4B

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSF-IF.C.7A

The x-intercepts of a quadratic equation are known as the _____.

• vertices
• squares
• zeros
• formulas

Tags

CCSS.HSF-IF.C.7A

Find the zeros of this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

Tags

CCSS.HSA-REI.B.4B

How many roots does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

The equation y = x²  is graphed.  Based on this graph, what are the roots of the equation x²  = 0?

• 0
• -1 and 1
• 2 and 0
• y

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

How many solutions (roots) does this graph have?

• one
• two
• no solutions
• cannot be determined

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

1 The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

Tags

CCSS.HSA-REI.B.4B