Factor the expression 36a^4 b^10-81a^16 b^20 using the two different techniques listed for parts 1(a) and 1(b). factor the given expression using the gcf monomial. factor the given expression using the difference of squares.

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d