Zeros of Polynomial Functions

 $Given\ x^2-2x-35,\ is\ x=-7\ a\ zero?$  

 $Given\ x^3-x^2-6x\ is\ x=0\ a\ zero?$  

 $Given\ x^3-4x^2+5x-2,\ is\ x=2\ a\ zero?$  

 $Given\ 3x^3-5x^2-3x-7,\ is\ x=-1\ a\ zero?$  

 $Given\ 3x^3-5x^2-27x-19,\ is\ x=-1\ a\ zero?$  

What are the zeros of the function  $f\left(x\right)=3x\left(x-4\right)\left(x+5\right)$  ?

What are the zeros of the function  $g\left(x\right)=\left(x+6\right)\left(x-4\right)\left(x+2\right)$  ?

What are the zeros of the function  $\left(x-3\right)\left(x-7\right)\left(x+5\right)$  ?

In the function $m\left(x\right)=x^2\left(x+3\right)\left(x-3\right)\left(x+4\right)$  which zero has a multiplicity of 2?

In the function  $p\left(x\right)=3x\left(x-6\right)^4\left(x+4\right)^3\left(x-5\right)^2$  which zero has a multiplicity of 3?