c^3 + 8 =
27a^3 - b^3 =
x^6 - y^9 =
(a - 2)^3 + 27 =

1) (c²-2c+4)(c-2)2) (9a²+3ab+b²)(3a-b)3) ((x²)²+x²y³+(y³)²)(x²-y³)4) ((a-2)²-(x-2)·3+3²)(a-2+3) = (a²-4a+4-3a+6+3²)(a+1) = (a²-7a+19)(a+1)