Question

Expand the following (7a−3b)^3

Answer 1

Answer:

(x-y)³=x³ - y³ - 3xy(x-y)

Step-by-step explanation:

(7a−3b)³ =(7a)³ - (3b)³ - 3*7a*3b(7a-3b)

              =49a³ - 9b³ - 63ab(7a-3b)

hope this is helpful:)