AU7 Part 2 Test Intervention

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4
• 2
• 8
• 20

Complete the Square
x² + 6x = 5

• (x + 3)² = 5
• (x + 6)² = 9
• (x + 3)² = 14
• (x + 6)² = 14

Solve the equation by completing the square and then finding the roots. 
x²+ 6x - 4 = 36

• x = -7, 7
• x = 4, -10
• x = -4 +- √7
• x = 10, -4

Solve by completing the square.
x² +12x = 5

• X = 6 + √41 or  6 − √41
• X= 35 or 47
• X = −6 + √41 or  −6 − √41
• X = √35 or √47

Solve by Factoring using the X-Box Method:

3x² + 5x - 12 = 0

• x = -4/3, x = 3

• x = 4/3, x = -3

• x = -1, x = 4

• x = 1, x = -4

What are the zeros?

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

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

9k² = 225

• 4
• 4, -4
• 25, -25
• -5, 5

• m=±81
• m=±9
• m=±3
• No real solution

ax²+bx+c=0  is the standard form of a quadratic equation.

• True
• False