Solving Quadratics by Zero

Solve for the values of x:

(x + 2)(x - 3) = 0

• { 2, 3 }

• { -2, -3 }

• { 2, 3 }

• { -2, 3 }

Answer explanation

Set both parts equal to zero

x+2=0 and x-3=0

Solve for x on both

Subtract 2 from both sides x+2-2=0-2

x=-2

x-3=0

Add 3 to both sides

x-3+3=0+3

x=3

Tags

CCSS.HSA-REI.B.4B

What are the solutions to this equation?

(x-5)(x+4)=0

Answer explanation

Set both parts equal to 0

x-5=0 and x-4=0

Solve for x

x=5 and x=4

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

What are the zeros of this graph?

• x = {-4, 2}

• (-4, 0 ) and (2, 0)

• x = {-1, 0}

• (-1, 9 ) and (0, -8)

Tags

CCSS.HSF-IF.C.7A

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

What are the zeroes of this graph?

• x = -4 and 2

• x= -1 and 0

• x = 9 and -8

• x= 4 and -2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What are the solutions/zeros/x-intercepts/roots? (When does this quadratic =0?) SELECT ALL THAT APPLY

• x = -4

• x = -1

• x = 0

• x = 2

Tags

CCSS.HSF-IF.C.7A

One of the zeros of this function is:

Tags

CCSS.HSA.APR.B.3

Highlight where you would find the zeros/solutions to the quadratic function.

Tags

CCSS.HSF-IF.C.7A