How do you factor this? (Algebra 3)

Question

anonymous · Answer

$$16x ^{3}-64x ^{2}$$

slaaibak · Answer

hint: common factor will be 16 and x^2

anonymous · Answer

I did that, but there are more steps to just that isn't there?

asnaseer · Answer

thats all there is - why don't you write out what you got and we can check if its correct?

anonymous · Answer

think of there GCF, which is 16x2
then think about how you will get 64x^2 
SO what do 16x^3 and 64x^2 have in common? x and 4 right!!
so the you basically you get  $$16x^2(x-4)$$
Then you can check to see if thats right by using the distributive property!!

anonymous · Answer

That's it? My teacher taught us to bracket our answers, and it just really confused me.

anonymous · Answer

yea basically....if you have more problems you can just visit purplemath.com