Question

find the value of a^3 - 27b^3 if a - 3b=-6 and ab=-10

Answer 1

I think this is your solution

Answer 2

I HOPE IT MAY HELP YOU

Answer:

a3 - 27b3=?

a-3b=-6

ab=-10

using (a-b)³=a³-b³-3ab(a-b)

          (a-3b)³ =(a)³-(3b)³- 9ab(a-3b)

          (-6)³ =(a)³ - (3b)³ - 9(-10)(-6)    

          a3-27b3 = -216+540

                   ANSWER =a³ -27b³ = 324