20.3 Finding Zeros From Quadratic Equations

Identify the x-intercepts:
y= -3(x-5)(x+5)

• (-5,0)(5,0)
• (5,0)(-5,0)
• (5,0)(0,5)
• (0,5)(0,-5)

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What are the solutions to this equation?

(3x - 2)(5x + 1) = 0

• x=5/2,-1/3

• x=1/5,-2/3

• x=1/3,-5/2

• x=2/3,-1/5

Tags

CCSS.HSA-REI.B.4B

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

Tags

CCSS.HSF-IF.C.7C

What are the solutions to this equation? (x-3)(x+2)=0

• x=3,-2
• x=-3,2
• x=2,3
• x=3,2

Tags

CCSS.HSA-REI.B.4B

Solve for h:
0 = (h – 7)(2h + 3)

• h = –14 or h = 12
• h = –7 or h = 3
• h = 7 or h = -3/2
• h = –14 or h = -3/2

Tags

CCSS.HSA-REI.B.4B

Find the zeros of this quadratic. (5b-4)(b+3)=0

• 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

Find the Zeros

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

• x= -5, -2

• x= 5, 2

• x=0

• x=-5,2

Find the Zeros

(2x - 6)(x + 4) = 0

• x= 3, -4

• x= 6, -4

• x=0

• no solution

Tags

CCSS.HSA-REI.B.4B

Find the Zeros

x(x - 8) = 0

• x= 8

• x= 0, 8

• x= 0, -8

• x= 0

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSF-IF.C.7A