Posted by
**Juri** on
.

Simplify (2xy^2+3)((2xy^2)^2-(2xy^2)(3)+(3)^2)

This reminds me of

(U+a)(U^2- aU + a^2). When mulipltiplied out, one gets a cubic equation. Do you remember the formula for factoring the sum of two cubes?

a^3+b^3= ????