SOLUTION: Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?

Algebra ->  Probability-and-statistics -> SOLUTION: Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?      Log On


   

Question 452713: Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?
--------------------------
3C3(a)^3(-2b^3)^0 + 3C2(a)^2(-2b^3) + 3C1(a)(-2b^3)^2 + 3C0(a)^0(-2b^3)^3
------
a^3 + 3(-2)a^2b^3 + 3*4ab^6 + (-8b^9)
------
a^3 - 6a^2b^4 + 12ab^6 - 8b^9
===================================
Cheers,
Stan H.