Finding Polynomial Equations from Graphs

Solving Polynomial Equations by Graphing

Obj: solve polynomial equations by examining graphs of the related functions and by graphing systems of equations.

Multiple Choice

State the number of real zeros

• x= -2

• x=2

• x= -3

• x=1

 $Read\$  

 $x^3+2x^2-4x=x+6$  

Use a graphing calculator to solve

 $f\left(x\right)=x^3+2x^2-5x-6=0$  

Multiple Choice

find the Zeros from the  graph 

$$x^3+2x^2-5x-6$$  

• $$3,\ 1,\ and\ \ 2\ are\ \ zeros\$$  

• $$2,-2\ and\ 3\ are\ zeros\$$  

• -3,-1 and 2 are zeros 

Plenary Time