Factor the gcf: 9x4y − 6x3y2 + 3x2y3. a. x2y(3x2 − 2xy + y2) b.3xy(3x2 − 2xy + y2) c.3xy2(3x2 − 2xy + y2) d.3x2y(3x2 + 2xy + y2)

For this case we have the following expression:
 
 For this case what you should do is observe the terms that are repeated in the given expression.
 We have then:
 
 It is the term that is present in the whole expression.
 Therefore, by doing common factor we have:
 
 
 the GCF is:
 
 option A: a 3 is missing at the beginning of the option.