4/16- Review Solving Quadratic Functions

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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.4

CCSS.HSA.REI.A.1

CCSS.HSA.CED.A.1

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x
• Solve for x
• FOIL
• Set each binomial factor equal to zero

Tags

CCSS.HSA.REI.B.4

Solve using Zero-Product Property:
 $(2x-2)(5x+5)=0$  

• x = -1

• x = -1 or x = 1

• x = 1

• x = -2 or x = 5

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

Solve by factoring:  $x^2-9x=-20$  

• x = - 4 and x = - 5

• x = 20 and x = - 9

• x = 4 and x = 5

• x = - 4 and x = 5

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.SSE.A.2

 $n^2-10n+24=0$  

•  $\left\{8,3\right\}$  

•  $\left\{4,6\right\}$  

•  $\left\{-4,-6\right\}$  

•  $\left\{12,2\right\}$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

Solve the quadratic equation  $2x^2+15=-11x$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.A.1

 $m^2+15m+72=18$  

•  $\left\{12,\ 6\right\}$  

•  $\left\{-9,-6\right\}$  

•  $\left\{9,6\right\}$  

•  $\left\{9,\ -6\right\}$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

Solve the quadratic equation $x^2+7x=0$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

 $n^2+3n=0$  

•  $\left\{-3,0\right\}$  

•  $\left\{3,0\right\}$  

• No Real Solution

•  $\left\{-3,-1\right\}$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3