Solving by Factoring and Root Property

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

Solve by factoring!

• -2, 4

• -8

• ±8

• No real solution

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

Given the zeros below, what are the factors?

• (3x-2) (4x-1)

• (2x-3) (1x-4)

• (3x-2) (1x-4)

• (2x-3) (4x-1)

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. 

Which answer below has the correct zero's

• 2 and -5

• -10 and -3

• -2 and 5

• -1 and 10

Solve using the square root property. x² = 16

• ± 4

• ± 8

• 4

• 8

• -9, 4

• -12, 3

• 2, -18

8x(x+1)(x-10)=0

• -8, -1, 10

• 0, -1, 10

• no real solution

When solving quadratic equations using the square root property, the first step is to isolate the squared expression.

• True

• False