Quadratic Factors and Zeroes

If a polynomial has 2 factors, it will have 2 zeros (or 1 zero with a multiplicity of 2).

• True

• False

Sum of the zeros of the polynomial x²+7x+10 are

• 7

• -7

• 10

• -10

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

Solve by factoring!

• -2, 4

• -8

• ±8

• No real solution

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Given the zeros below, what are the factors?

• (3x-2) (4x-1)

• (2x-3) (1x-4)

• (3x-2) (1x-4)

• (2x-3) (4x-1)

Tags

CCSS.HSA.APR.B.3

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

• y-intercepts

• vertex

• x-intercepts

• maximum

Tags

CCSS.HSF-IF.C.7D

What are the zeros of x²+9x+14

• 2, 7

• -2, -7

• 2, -7

• -2, 7

Tags

CCSS.HSA-REI.B.4B

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 the quadratic equation by graphing.

a² + 10a + 21 = 0

• ± √21

• -3 , -7

• 3 , 7

• 28 , -7