Quadratic equations

Find the zeros of this quadratic.

• b=-2, b=-4
• b=-2, b=4
• b=1/2, b=-2
• b=2, b=-4

Tags

CCSS.HSA-REI.B.4B

Convert x²-9x+20 to factored form and solve.

• (x-10)(x+2); x=-2, 10
• (x+4)(x+5); x=-5, -4
• (x-4)(x-5); x=4, 5
• Not factorable

Tags

CCSS.HSA-REI.B.4B

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve the quadratic equation behind this text. 

• x = -5, x = 1
• x = 2, x = 1
• x = 5, x = 3
• x = -5, x = 3

Tags

CCSS.HSA-REI.B.4B

The quadratic equation behind this text, has how many solutions?

• No solution
• 1
• 2
• 4

Suzie solves the equation below:
x² + 4x - 12 = 2
(x - 2)(x + 6) = 2, 
by setting x -2 = 0 and x + 6 = 0. 
Her solutions are x = 2 and x = -6.
Is Suzie correct? Why or why not?

• Yes, she factored correctly and then used the zero product property
• Yes, she factored correctly and then square rooted.
• No, she did factor correctly, but she can't use the zero product property as shown.
• No, she didn't factor correctly so the rest of her work is wrong. 

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

Solve     2x² - 32 = 0

• -16 or 16
• -4 or 4
• No Solution
• -8 or 8

Tags

CCSS.8.EE.A.2

Solve for x by factoring.

• A
• B
• C
• D

The area of a floor is represented by the expression x² + x – 12.  If the length of the floor is (x – 3), what is the width?
Hint: Factor

• (x + 4)
• (x - 4)
• (2x + 4)
• (2x - 4)

Tags

CCSS.HSA.APR.D.6