SOLUTION: Please help me factor this polynomial completely x^2y-16y+4x^2-64

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please help me factor this polynomial completely x^2y-16y+4x^2-64       Log On


   

Question 589538: Please help me factor this polynomial completely x^2y-16y+4x^2-64
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
factor this polynomial completely x^2y-16y+4x^2-64
----------------------------
= y(x^2-16) + 4(x^2-16)
------
= (y+4)(x^2-16)
------
= (y+4)(x-4)(x+4)
====================
Cheers,
Stan H.