Quadratic Factored Form

What does it mean to "find the zeros" of a quadratic?

• Plug in 0 and solve the expression.

• Factor then set each factor equal to zero and solve to find x-intercepts

• Set the expression equal to zero and solve 

• Factor then set each factor equal to zero and solve to find y-intercepts

Tags

CCSS.HSA-REI.B.4B

Solve for the values of x:

(x - 5)(x - 1) = 0

• (5, 0) or (1, 0)

• (-5, 0) or (-1, 0)

• (0, -5) or (0, -1)

• (0, 5) or (0, 1)

Tags

CCSS.HSA-REI.B.4B

Solve for the values of x:
(x - 3)(x + 6) = 0

• { -3, -6 }

• { 3, -6 }

• { -3, -6 }

• { 3, 6 }

Tags

CCSS.HSA-REI.B.4B

What are the x-intercepts?

2(x + 5)(x + 1) = 0

• x = 0, 5, 1

• x = 0, - 5, -1

• x = 5, 1

• x = -5, -1

Tags

CCSS.HSA-REI.B.4B

What are the x-intercepts of the quadratic?

• (2, 0) and (4, 0)

• (-2, 0) and (-5, 0)

• (2, 0) and (5, 0)

• (-2, 0) and (-4, 0)

Tags

CCSS.HSF-IF.C.7A

When you are writing the factored form of a quadratic equation you ​ ​ (a)   the signs of the ​ (b)   and add or subtract them from ​ (c)   .

• change

• roots

• x

• keep

• vertex

• y-intercepts

• y

What is the factored form of the quadratic function:

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

• (x - 2)

• (x - 3)

• (x + 2)

• (x + 3)

Identify ALL the factors of the quadratic function: katex latex="y\ =\ x^2+19x\ +\ 90"

• (x + 10)

• (x - 10)

• (x + 9)

• (x - 9)

What are the x-intercepts for g(x) = (x + 8)(x + 2)

• 8 and 2

• (8, 2)

• -8 and - 2

• (-8, -2)

Tags

CCSS.HSF-IF.C.7C