Solve Quadratics Review

What are the solutions to this equation?
(3x-2)(5x+1)=0

• x=5/2,-1/3

• x=1/5,-2/3

• x=1/3,-5/2

• x=2/3,-1/5

Tags

CCSS.HSA-REI.B.4B

If the discriminant equals 0, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Tags

CCSS.HSA-REI.B.4B

Can this quadratic be solved by BOTH square root method AND difference of squares?
16x² - 25 = 0

• Yes!

• No - just square root method

• No - just difference of squares method

Tags

CCSS.HSA-REI.B.4B

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts

• vertex

• x-intercepts

• maximum

Tags

CCSS.HSF-IF.C.7D

Use the quadratic formula to solve 2x² + 2x - 12.

• -2, 3

• 2, 3

• 2, -3

• -2, -3

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

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

Solve the quadratic equation.
2p² - 2p - 55 = 5

• .  {3.28, -2.28}

• .  {2.5, -1.78}

• . {6, -5}

• {-1, 4}

Tags

CCSS.HSA-REI.B.4B

What is the formula for the discriminant?

• x = -b/2a

• b² - 4ac

• a² + b² = c²

• x = [-b±√(b²-4ac)]/2a

Tags

CCSS.HSA-REI.B.4B

If the discriminant is equal to 0, how many solutions are there?

• No solutions

• 1 Solution

• 2 Solutions

• Infinite solutions

Tags

CCSS.HSA-REI.B.4B