Pre-Quiz; Fundamental Theorem of Algebra

What does

 $i$  =

•  $-1$  

•  $\sqrt{-1}$  

•  $1$  

• 

What is the conjugate of

 $1+2i$  

•  $1-2i$  

•  $-1-2i$  

•  $-1+2i$  

• 

What does

 $i^2$  =?

•  $-1$  

•  $1$  

•  $\sqrt{-1}$  

• 

How many zero's real or imaginary can a degree 4 function have?

• zero, zippo, none, nada

• 4

• 3

• 2

• 1

What's the conjugate of

 $-i$  

•  $i$  

•  $-i$  

•  $1$  

•  $-1$  

If 2+3i is a zero of a polynomial function what must another zero be?

• 2-3i

• 2+3i

• -2-3i

• -2+3i

if the following are zeros of a polynomial function what is the least degree of this polynomial function? zero's are;

 $i+4i,\ -5-2i\ and\ i$  

• 6

• 3

• 7

• 101

If

 $f\left(3\right)=-2.7$  and  $f\left(4\right)=0.123$  what do you know happens to the graph between the x values of 3 and 4?

• The graph crosses the x-axis

• the graph crosses the y-axis

• this outcome means the graph does not cross the x-axis

• this outcome means the graph does not cross the y-axis

if  $h\left(w\right)=0$ then we know which of the following 

• w is a zero of the polynomial function

•  $w=0$  

• the graph touches or crosses at w

•  $\left(x-w\right)$  is a factor of the polynomial function

Determine the zeros and their possible multiplicity; check all that apply

•  $x=-3;\ multiplicity\ 1$  

•  $x=1;\ multiplicity\ 2$  

•  $x=0,\ multiplicity\ 1$  

•  $x=0;\ multiplicity\ 2$  

•  $x=1;\ multiplicity\ 1$