Quadratics

Solve the quadratic inequality:

 $x^2+11x+10\ge0$  

•  $x\le-10\ ,\ \ x\ge-1$  

•  $x\ge1\ ,\ \ x\le10$  

•  $1\le x\le10$  

•  $-1\le x\le10$  

Solve the quadratic inequality:

 $x^2+10x+16<0$  

•  $2<x<8$  

•  $-8<x<-2$  

•  $-8<x<2$  

•  $-2<x<8$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve the quadratic inequality:

 $x^2-49\ge0$  

•  $x\le-7\ ,\ \ x\ge7$  

•  $x\le0\ ,\ \ x\ge7$  

•  $-7\le x\le7$  

•  $-7\le x\le0$  

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What are the zeros?

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

Tags

CCSS.HSF-IF.C.7A

What is another word for zeros?

• y-intercepts
• roots
• vertex
• axis of symmetry

Tags

CCSS.HSF-IF.C.7C

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Solve.
n² - 5 = -4

• n = ±√9
• n = ±3
• n = ±1
• No real solution

Tags

CCSS.8.EE.A.2

ax²+bx+c=0  is the standard form of a quadratic equation.

• True
• False

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4