Quadratic Formula and Factoring

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

• 16

• -8

• 8

• -24

Solve     8x² - 6x + 1 = 0

• No Solution

• 0 or 1

• -0.5 or -0.25

• 0.25 or 0.5

Tags

CCSS.HSA-REI.B.4B

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.HSA-REI.B.4B

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

Factor the following perfect square trinomial using the rule(b/2)² :

x² + 18x + 81                       

• (x + 9)(x – 9)

• (x + 18)²

• (x + 9)²

• (x + 6)²

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to find the solutions for

y = 2x² - 9x + 5

• -8.14 and 6.14

• -4.07 and 3.07

• 3.9 and 0.6

• ZERO solutions

Tags

CCSS.HSA-REI.B.4B

Complete the square.
x² + 14x + ____

• x² + 14x - 196

• x² + 14x + 49

• x² + 14x - 49

• x² + 14x + 196

Tags

CCSS.HSA-REI.B.4B

Solve
2x² + 17x + 21 = 0

• x= ^-21/₂, -17

• x= ²/₃, 16

• x=-7, ^-3/₂

• x=15, -³/₇

Tags

CCSS.HSA-REI.B.4B

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

• 4

• 2

• 8

• 20

Tags

CCSS.HSA-REI.B.4B

Which method is most efficient to solve:
8x²  -  5x  = 0

• Square Roots

• Factoring

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B