CCSS.Math.Content.HSA.REI.B.4

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the vertex of this quadratic equation?  
y = 2(x - 2)²  +  5

• (-2,5)
• (2,5)
• (5,-2)
• (-5,-2)

Tags

CCSS.Math.Content.HSA.REI.B.4

9k² = 225

• 4
• 4, -4
• 25, -25
• -5, 5

Tags

CCSS.Math.Content.HSA.REI.B.4

Factor
x² + 9x - 36

• (x + 12)(x - 3)
• (x + 9)(x - 4)
• (x - 12)(x + 3)
• (x - 9)(x - 4)

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve by factoring.
z² - 6z - 27 = 0

• z = 3 or z = 9
• z = 3 or z = -9
• z = -3 or z = 9
• z = -3 or z = -9

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

CCSS.Math.Content.HSA.REI.B.4

If the discriminant is not a perfect square, then you will have

• two real solutions
• two irrational solutions
• two imaginary solutions
• one solution

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve by factoring.
z² - 6z - 27 = 0

• z = 3 or z = 9
• z = 3 or z = -9
• z = -3 or z = 9
• z = -3 or z = -9

Tags

CCSS.Math.Content.HSA.REI.B.4

What are the x- intercepts?

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

Tags

CCSS.Math.Content.HSA.REI.B.4

Factor completely.

x² - 4x - 45

• ( x - 9 ) ( x - 5 )

• ( x - 9 ) ( x + 5 )

• ( x + 9 ) ( x + 5 )

• ( x + 9 ) ( x - 5 )

Tags

CCSS.Math.Content.HSA.REI.B.4