Question

Determine the rational roots of each polynomial function.
f (x) = x² - 3x + 2
choices are :
-1 and 2
1 and -2
1 and 2
-1 and -2

Answer 1

Answer:

1 and 2

Step-by-step explanation:

x² - 3x + 2=0

=>x² - 2x - x + 2=0

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

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

=> x=1; x=2