Question

find the zero of the polynomial function
y=x^2-3x+2

Answer 1

set y equal to 0

x^2-3x+2=0

What two numbers can you multiply to get 2, but add or subtract to get -3?

-2 and -1

so therefore

(x-2)(x-1)=0

set each factor equal to 0

x-2=0 and x-1=0
x=2 and x=1 are the zeros