SOLUTION: Please help to factor x^3y^3 - 64

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please help to factor x^3y^3 - 64      Log On


   

Question 68367This question is from textbook An incremental Developmnet
: Please help to factor
x^3y^3 - 64 This question is from textbook An incremental Developmnet

Found 2 solutions by CrazyMan Jr., rmromero:
Answer by CrazyMan Jr.(21) About Me  (Show Source):
You can put this solution on YOUR website!
x^3y^3-64 becomes-> (xy-4)^3

Answer by rmromero(383) About Me  (Show Source):
You can put this solution on YOUR website!
-->x%5E3y%5E3+-+64
%28xy%29%5E3+-+4%5E3
%28xy+-+4%29+%28%28xy%29%5E2%29+%2B+4xy+%2B+16%29
Answer is :
highlight%28%28xy+-+4%29%28x%5E2y%5E2+%2B+4xy+%2B+16%29%29
Checking: Distributive property

xy%28xy%29%5E2+%2B+4x%5E2y%5E2+%2B+16xy+-+4x%5E2y%5E2+-+16xy+-+64
x%5E3y%5E3+-+64