Question 271975
Find the product. 
(5b - 1)(2b - 1)Need help.

Using FOIL (First, Inner, Outer, Last):

(5b - 1)*(2b - 1) =

5b*2b + 5b*-1 + -1*2b + -1*-1
10b^2 - 5b - 2b + 1
10b^2 - 7b + 1