SOLUTION: Simplify..Assume that no deminator is equal to zero. (-2x4)3 (-4x2y6)3. I have 512x12y9 but my teacher said it was wrong..and crossed out the 9 behind the y.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Simplify..Assume that no deminator is equal to zero. (-2x4)3 (-4x2y6)3. I have 512x12y9 but my teacher said it was wrong..and crossed out the 9 behind the y.       Log On


   



Question 84252: Simplify..Assume that no deminator is equal to zero.
(-2x4)3 (-4x2y6)3.
I have 512x12y9 but my teacher said it was wrong..and crossed out the 9 behind the y.

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
(-2x^4)^3(-4x^2y^6)^3
-2^3=-8
-4^3=-64
-8*-64=512
(x^4)^3=x^12
(x^2)^3=x^6
x^12*x^6=x^18 your x^12 is also incorrect!
(y^6)^3=y^18 powers times powers needs to be multiplied.
512x^18y^18 is the correct answer.