Question 182225
 I need help factoring the difference of these cubes. 
54x^3-16y^3
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If you divide it by 2, you get
2*(27x^3 - 8y^3) which is
{{{2*((3x)^3 - (2y)^3)}}}
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Can you take it from there? A difference of 2 cubes?
I'll add a hint.
{{{a^3 - b^3 = (a-b)*(a^2 + ab + b^2)}}}