Solving Real Number Quadratics

Solve by Factoring Completely: 3x² + 18x +15 = 0 Hint: Factor GCF first.

• x=5 x=-1

• x=3 x = 1

• x= -5 x= - 1

• x= -5 x = 1

Tags

CCSS.HSA-REI.B.4B

Solve by factoring

12x² + 8x = 0

• x = 0, -2/3

• x = 0

• x = 3/2, 0

• x = 4

Tags

CCSS.HSA-REI.B.4B

A rocket was launched from a balcony 10 feet from the ground. The rocket modeled the equation h(t)= -t² + 6t + 10, where t represent time in seconds and h(t) represents the height in feet. What is the maximum height the rocket will reach before it starts to go back down?

• 10 feet 

• 19 feet

• 13 feet

• 16 feet 

What is the axis of symmetry for the following equation?

y=4x²-8x+9

• x = 5

• x=1

• y = 1

• y = 5

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

Tags

CCSS.HSA-REI.B.4B

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

Solve.
3x² - 192 = 0

• -32 or 32

• No Solution

• -8 or 8

• -64 or 64

Tags

CCSS.8.EE.A.2

Identify the domain and range of the function.

• Domain: -6 ≤ x ≤ 2
  Range: -3 ≤ y ≤ 5

• Domain: All real number
  Range: -3 ≤ y ≤ 5

• Domain: All real numbers
  Range: y ≥ -3

• Domain: All real number
  Range: y ≤ -3

Which of the following describes the graph of f(x)= x² - 2x -15.

• The graph has a maximum and has the x-intercepts of (-3, 0) and (5, 0)

• The graph has a minimum and has the x-intercepts of (-3, 0) and (5, 0)

• The graph has a maximum and has the x-intercepts of (3, 0) and (-5, 0)

• The graph has a minimum and has the x-intercepts of (3, 0) and (-5, 0)

Tags

CCSS.HSF-IF.C.7A

Which if the following is an equation for a quadratic function that opens downward and has the vertex of (-4, 7)?

• f(x)= -(x-4)²+7

• f(x)= (x+4)²+7

• f(x)= -(x+4)²+7

• f(x)= (x-4)²+7