The expression 8x6y12+27 is a sum of cubes. We can rewrite it as (2x2y4)3+(3)3. The sum of cubes formula is:
a3+b3=(a+b)(a2−ab+b2) Let a=2x2y4 and b=3. Then a3=(2x2y4)3=8x6y12 and b3=33=27. Applying the sum of cubes formula, we have:
8x6y12+27=(2x2y4+3)((2x2y4)2−(2x2y4)(3)+(3)2) =(2x2y4+3)(4x4y8−6x2y4+9)